A little taste of Citadel 49xxx equivalents. (Citadel 49xxx, Army Painter, Citadel Base, Citadel Layer, Instar Vintage, Instar Paint and VGC are measured with a spectrophotometer at Illuminant: D65, Observer: 2deg)
The outer rectangle is the Citadel49xxx and the inner is the closest matched colour from the paint brand above the colour swatch.
Three attachments are obviously the maximum, so I can unfortunately not add comparison swatches for more than the three I added.
Scab Red, sRGB: 112,41,50:
Army Painter: Crusted Sore(sRGB; 95,45,52), deltaE2000: 4.5
Citadel Base: Khorne Red(sRGB: 120,57,61), deltaE2000: 4.1
Citadel Layer: Word Bearers Red(sRGB: 117,57,52), deltaE2000: 5.7
Instar Vintage: IV-01(sRGB: 109,66,73), deltaE2000: 8.0
Instar Paint: Wine Red(sRGB: 127,54,62), dE2K: 4.3
Instar Alpha: Pure Magenta(sRGB: 112,39,57), dE2K: 3.4
VGG: Scarlet Red(sRGB: 125,50,56), dE2K: 2.6
Red Gore, sRGB: 122,27,43:
Army Painter: Vampire Red(sRGB; 145,31,44), dE2K: 5.4
Citadel Base: Mephiston Red(sRGB: 131,34,37), dE2K: 4.8
Citadel Layer: Word Bearers Red(sRGB: 117,57,52), deltaE2000: 7.7
Instar Vintage: IV-07(sRGB: 148,63,66), dE2K: 9.3
Instar Paint: Wine Red(sRGB: 127,54,62), dE2K: 6.0
Instar Alpha: Pure Magenta(sRGB: 112,39,57), dE2K: 3.6
VGC: Heavy Red(sRGB: 121,41,50), dE2K: 1.27
Blood Red, sRGB: 182,25,30:
Army Painter: Pure Red(sRGB: 190,44,48), dE2K: 4.0
Citadel Base: Mephiston Red(sRGB: 131,34,37), dE2K: 10.8
Citadel Layer: Evil Sunz Scarlet(sRGB: 169,57,51), dE2K: 4.9
Instar Vintage: IV-27(sRGB: 183,54,53), dE2K: 4.8
Instar Paint: Burnt Red(sRGB: 177,44,43), dE2K: 2.8
Instar Alpha: Pure Red(sRGB: 198,0,10), dE2K: 6.3
VGC: Bloody Red(sRGB; 186,47,44), dE2K: 1.0
Blazing Orange, sRGB: 227,65,38:
Army Painter: Lava Orange(sRGB: 229,63,33), dE2K: 0.7
Citadel Base: Jokaero Orange(sRGB: 173,101,67), dE2K: 12.7
Citadel Layer: Troll Slayer Orange(sRGB: 245,89,43), dE2K: 6.8
Instar Vintage: IV-17(sRGB: 187,97,55), dE2K: 9.8
Instar Paint: Racing Red(sRGB: 199,46,42), dE2K: 8.8
Instar Alpha: Coral Pink(sRGB: 207,96,81), dE2K: 6.6
VGC: Hot Orange(sRGB: 222,68,46), dE2K: 1.7
Fiery Orange, sRGB: 255,106,23:
Army Painter: Mythical Orange(sRGB; 241,93,27), dE2K: 4.5
Citadel Base: Jokaero Orange(sRGB: 173,101,67), dE2K: 17.1
Citadel Layer: Fire Dragon Bright(sRGB: 255,117,49), dE2K: 2.5
Instar Vintage: IV-11(sRGB: 201,134,78), dE2K: 13.8
Instar Paint: Sunset Orange(sRGB: 176,107,77), dE2K: 16.6
Instar Alpha: Pure Orange(sRGB: 242,72,0), dE2K: 8.3
VGC: Orange Fire(sRGB: 242,105,42), dE2K: 3.4
Golden Yellow, sRGB: 255,163,0 :
Army Painter: Phoenix Flame(sRGB: 255,172,0), dE2K: 2.6
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 13.8
Citadel Layer: Yriel Yellow(sRGB: 255,165,0), dE2K: 2.9
Instar Vintage: IV-29(sRGB: 255,188,15), dE2K: 8.1
Instar Paint: Brilliant Yellow(sRGB: 255,197,0), dE2K: 12.0
Instar Alpha: Banana Yellow(sRGB: 221,169,82), dE2K: 12.0
VGC: Gold Yellow(sRGB: 255,165,0), dE2K: 2.5
Sunburst Yellow, sRGB: 255,194,0:
Army Painter: Daemonic Yellow(sRGB; 231,177,0), dE2K: 7.4
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 17.9
Citadel Layer: Flash Gitz Yellow(sRGB: 255,192,0), dE2K: 2.1
Instar Vintage: IV-29(sRGB: 255,188,15), dE2K: 4.4
Instar Paint: Brilliant Yellow(sRGB: 255,197,0), dE2K: 3.7
Instar Alpha: Pure Mid Yellow(sRGB: 243,189,0), dE2K: 6.6
VGC: Moon Yellow(sRGB: 255,204,0), dE2K: 3.9
Bad Moon Yellow, sRGB: 255,214,0:
Army Painter: Babe Blonde(sRGB: 247,211,0), dE2K: 3.5
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 22.6
Citadel Layer: Phalanx Yellow(sRGB: 255,211,48), dE2K: 4.5
Instar Vintage: IV-29(sRGB: 255,188,15), dE2K: 10.7
Instar Paint: Brilliant Yellow(sRGB: 255,197,0), dE2K: 6.5
Instar Alpha: Pure Yellow(sRGB: 255,213,0), dE2K: 2.0
VGC: Moon Yellow(sRGB: 255,204,0), dE2K: 4.9
Scorched Brown, sRGB: 69,52,46:
Army Painter: Oak Brown(sRGB: 80,59,48), dE2K: 4.0
Citadel Base: Rhinox Hide(sRGB: 66,55,51), dE2K: 2.9
Citadel Layer: Bloodreaver Flesh(sRGB: 99,72,68), dE2K: 8.5
Instar Vintage: IV-37(sRGB: 80,73,71), dE2K: 8.3
Instar Paint: Deep Brown(sRGB: 70,60,59), dE2K: 4.6
Instar Alpha: Camo Brown(sRGB: 68,53,49), dE2K: 1.3
VGC: Charred Brown(sRGB: 78,64,59), dE2K: 4.2
Bestial Brown, sRGB: 102,67,42:
Army Painter: Dirt Spatter(sRGB: 95,70,60), dE2K: 6.6
Citadel Base: Mournfang Brown(sRGB: 103,69,52), dE2K: 3.7
Citadel Layer: Doombull Brown(sRGB: 100,58,46), dE2K: 7.0
Instar Vintage: IV-03(sRGB: 107,78,60), dE2K: 4.7
Instar Paint: Red Brown(sRGB: 106,73,57), dE2K: 4.2
Instar Alpha: Rust Brown(sRGB: 97,59,40), dE2K: 3.6
VGC: Beasty Brown(sRGB: 125,88,60), dE2K: 7.4
Snakebite Leather, sRGB: 124,88,43:
Army Painter: Leather Brown(sRGB: 116,88,70), dE2K: 8.7
Citadel Base: XV-88(sRGB: 123,94,65), dE2K: 5.0
Citadel Layer: Skrag Brown(sRGB: 138,80,49), dE2K: 8.8
Instar Vintage: IV-31(sRGB: 132,95,55), dE2K: 3.0
Instar Paint: Sandstone Brown(sRGB: 137,94,57), dE2K: 4.7
Instar Alpha: Milk Chocolate(sRGB: 121,80,61), dE2K: 9.7
VGC: Leather Brown(sRGB: 137,102,61), dE2K: 5.2
Bubonic Brown, sRGB: 186,140,63:
Army Painter: Basilisk Brown(sRGB: 185,132,49), dE2K: 2.9
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 7.0
Citadel Layer: Zamesi Desert(sRGB: 172,130,65), dE2K: 4.3
Instar Vintage: IV-30(sRGB: 193,145,67), dE2K: 1.8
Instar Paint: Warm Yellow(sRGB: 198,140,65), dE2K: 3.6
Instar Alpha: Pure Oxide Yellow(sRGB: 193,137,42), dE2K: 3.2
VGC: Heavy Gold Brown(sRGB: 180,133,63), dE2K: 2.6
Vomit Brown, sRGB: 195,126,69:
Army Painter: Basilisk Brown(sRGB: 185,132,49), dE2K: 8.2
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 9.1
Citadel Layer: Tau Light Ochre(sRGB: 182,118,70), dE2K: 3.8
Instar Vintage: IV-11(sRGB: 201,134,78), dE2K: 2.6
Instar Paint: Warm Yellow(sRGB: 198,140,65), dE2K: 6.9
Instar Alpha: Warm Flesh(sRGB: 177,120,89), dE2K: 7.3
VGC: Scrofulous Brown(sRGB: 192,120,48), dE2K: 3.4
Bleached Bone, sRGB: 203,184,145:
Army Painter: Skeleton Bone(sRGB: 180,166,136), dE2K: 5.6
Citadel Base: Wraithbone(sRGB: 198,189,168), dE2K: 6.2
Citadel Layer: Screaming Skull(sRGB: 201,186,151), dE2K: 1.9
Instar Vintage: IV-38(sRGB: 201,185,145), dE2K: 1.4
Instar Paint: Golden Sand(sRGB: 209,183,143), dE2K: 2.4
Instar Alpha: Beach Sand(sRGB: 238,197,125), dE2K: 9.3
VGC: Bonewhite(sRGB: 195,182,153), dE2K: 3.4
Dark Flesh, sRGB: 91,56,46:
Army Painter: Chaotic Red(sRGB: 89,48,44), dE2K: 3.9
Citadel Base: Mournfang Brown(sRGB: 103,69,52), dE2K: 5.0
Citadel Layer: Doombull Brown(sRGB: 100,58,46), dE2K: 2.5
Instar Vintage: IV-03(sRGB: 107,78,60). dE2K: 8.6
Instar Paint: Red Brown(sRGB: 106,73,57), dE2K: 6.0
Instar Alpha: Rust Brown(sRGB: 97,59,40), dE2K: 4.3
VGC: Dark Fleshtone(sRGB: 105,68,61), dE2K: 4.5
Vermin Brown, sRGB: 133,76,47:
Army Painter: Fur Brown(sRGB: 134,86,72), dE2K: 6.5
Citadel Base: Mournfang Brown(sRGB: 103,69,52), dE2K: 8.1
Citadel Layer: Skrag Brown(sRGB: 138,80,49), dE2K: 1.7
Instar Vintage: IV-14(sRGB: 142,80,53), dE2K: 2.4
Instar Paint: Sandstone Brown(sRGB: 137,94,57), dE2K: 7.5
Instar Alpha: Milk Chocolate(sRGB: 121,80,61), dE2K: 5.0
VGC: Beasty Brown(sRGB: 125,88,60), dE2K: 6.7
Dwarf Flesh, sRGB: 206,123,103:
Army Painter: Barbarian Flesh(sRGB: 216,142,113), dE2K: 6.1
Citadel Base: Ratskin Flesh(sRGB: 170,100,71), dE2K: 10.9
Citadel Layer: Cadian Fleshtone(sRGB: 175,123,101), dE2K: 7.4
Instar Vintage: IV-17(sRGB: 187,97,55), dE2K: 11.0
Instar Paint: Sunset Orange(sRGB: 176,107,77), dE2K: 9.0
Instar Alpha: Dark Peach(sRGB: 194,115,80), dE2K: 6.3
VGC: Heavy Orange(sRGB: 216,123,111), dE2K: 3.4
Bronzed Flesh, sRGB: 226,151,81:
Army Painter: Troll Claws(sRGB: 220,170,104), dE2K: 7.1
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 3.6
Citadel Layer: Ungor Flesh(sRGB: 202,151,97), dE2K: 5.8
Instar Vintage: IV-12(sRGB: 207,148,86), dE2K: 4.1
Instar Paint: Amber(sRGB: 205,152,92), dE2K: 5.1
Instar Alpha: Banana Yellow(sRGB: 221,169,82), dE2K: 8.9
VGC: Elf Skintone(sRGB: 225,164,114), dE2K: 5.1
Elf Flesh, sRGB: 237,176,132:
Army Painter: Corpse Pale(sRGB: 223,189,152), dE2K: 7.4
Citadel Base: Averland Sunset(sRGB: 216,152,77), dE2K: 9.9
Citadel Layer: Ungor Flesh(sRGB: 202,151,97), dE2K: 9.0
Instar Vintage: IV-12(sRGB: 207,148,86), dE2K: 9.5
Instar Paint: Light Tan(sRGB: 209,169,130), dE2K: 6.3
Instar Alpha: Beach Sand(sRGB: 238,197,125), dE2K: 11.4
VGC: Elf Skintone(sRGB: 225,164,114), dE2K: 3.7
Liche Purple, sRGB: 75,38,77:
Army Painter: Alien Purple(sRGB: 71,55,90), dE2K: 6.8
Citadel Base: Phoenician Purple(sRGB: 67,56,91), dE2K: 8.3
Citadel Layer: Xereus Purple(sRGB: 83,60,93), dE2K: 6.9
Instar Vintage: IV-34(sRGB: 93,64,95), dE2K: 7.8
Instar Paint: Dark Purple(sRGB: 68,65,81), dE2K: 14.6
Instar Alpha: Pure Blue(sRGB: 37,31,76), dE2K: 10.3
VGC: Hexed Lichen(sRGB: 87,63,102), dE2K: 7.8
Warlock Purple, sRGB: 138,31,76:
Army Painter: Wasteland Soil(sRGB: 125,67,83), dE2K: 8.7
Citadel Base: Screamer Pink(sRGB: 116,53,74), dE2K: 6.4
Citadel Layer: Wazdakka Red(sRGB: 151,57,67), dE2K: 10.4
Instar Vintage: IV-01(sRGB: 109,66,73), dE2K: 11.7
Instar Paint: Dark Maroon(sRGB: 128,56,78), dE2K: 5.6
Instar Alpha: Blush Pink(sRGB: 147,32,62), dE2K: 6.3
VGC: Warlord Purple(sRGB: 155,52,101), dE2K: 6.2
Tentacle Pink, sRGB: 210,123,185:
Army Painter: Pixie Pink(sRGB: 203,95,144), dE2K: 9.7
Citadel Base: Grey Seer(sRGB: 156,161,162), dE2K: 16.5
Citadel Layer: Fulgrim Pink(sRGB: 227,157,204), dE2K: 8.5
Instar Vintage: IV-24(sRGB: 149,163,167), dE2K: 17.6
Instar Paint: Havoc Pink(sRGB: 235,157,203), dE2K: 9.1
Instar Alpha: Carnation Pink(sRGB: 185,117,127), dE2K: 14.7
VGC: Squid Pink(sRGB: 217,130,186), dE2K: 2.3
Midnight Blue, sRGB: 48,43,65:
Army Painter: Dark Sky(sRGB: 42,52,76), dE2K: 7.0
Citadel Base: Naggaroth Night(sRGB: 60,55,75), dE2K: 3.9
Citadel Layer: Xereus Purple(sRGB: 83,60,93), dE2K: 10.1
Instar Vintage: IV-26(sRGB: 68,64,86), dE2K: 6.9
Instar Paint: Dark Purple(sRGB: 68,65,81), dE2K: 7.8
Instar Alpha: Dark Blue(sRGB: 47,53,75), dE2K: 5.7
VGC: Night Blue(sRGB: 57,55,70), dE2K: 5.3
Regal Blue, sRGB: 27,49,85:
Army Painter: Dark Sky(sRGB: 42,52,76), dE2K: 4.7
Citadel Base: Kantor Blue(sRGB: 54,69,95), dE2K: 7.4
Citadel Layer: Altdorf Guard Blue(sRGB: 55,81,133), dE2K: 11.3
Instar Vintage: IV-09(sRGB: 52,61,81), dE2K: 7.2
Instar Paint: Deep Water Blue(sRGB: 51,72,116), dE2K: 7.8
Instar Alpha: Dark Blue(sRGB: 47,53,75), dE2K: 5.9
VGC: Imperial Blue(sRGB: 48,68,100), dE2K: 6.3
Ultramarines Blue, sRGB: 41,81,150:
Army Painter: Ultramarine Blue(sRGB: 59,79,140), dE2K: 3.6
Citadel Base: Caledor Sky(sRGB: 20,85,142), dE2K: 4.3
Citadel Layer: Altdorf Guard Blue(sRGB: 55,81,133), dE2K: 3.1
Instar Vintage: IV-28(sRGB: 60,89,146), dE2K: 3.2
Instar Paint: Sapphire Blue(sRGB: 30,91,145), dE2K: 5.2
Instar Alpha: Electric Blue(sRGB: 0,79,146), dE2K: 7.1
VGC: Heavy Blue(sRGB: 48,84,122), dE2K: 4.2
Enchanted Blue, sRGB: 0, 86,146:
Army Painter: Deep Blue(sRGB: 45,71,106), dE2K: 8.4
Citadel Base: Caledor Sky(sRGB: 20,85,142), dE2K: 1.6
Citadel Layer: Alaitoc Blue(sRGB: 54,89,129), dE2K: 5.1
Instar Vintage: IV-28(sRGB: 60,89,146), dE2K: 7.0
Instar Paint: Sapphire Blue(sRGB: 30,91,145), dE2K: 2.3
Instar Alpha: Electric Blue(sRGB: 0,79,146), dE2K: 2.8
VGC: Heavy Blue(sRGB: 48,84,122), dE2K: 5.0
Ice Blue, sRGB: 0,152,193:
Army Painter: Troglodyte Blue(sRGB: 24,157,196), dE2K: 1.9
Citadel Base: Celestra Grey(sRGB: 145,157,155), dE2K: 19.6
Citadel Layer: Lothern Blue(sRGB: 29,140,175), dE2K: 4.2
Instar Vintage: IV-05(sRGB: 158,182,200), dE2K: 17.6
Instar Paint: Bright Blue(sRGB: 0,147,170), dE2K: 6.8
Instar Alpha: Cement Grey(sRGB: 92,99,106), dE2K: 24.7
VGC: Electric Blue(sRGB: 38,139,178). dE2K: 4.7
Hawk Turquoise, sRGB: 0,103,121:
Army Painter: Hydra Turquoise(sRGB: 0,122,138), dE2K: 6.9
Citadel Base: Thousand Sons Blue(sRGB: 0,95,127), dE2K: 8.7
Citadel Layer: Sotek Green(sRGB: 0,100,121), dE2K: 2.4
Instar Vintage: IV-33(sRGB: 65,92,120), dE2K: 15.5
Instar Paint: Ocean Blue(sRGB: 0,105,160), dE2K: 15.4
Instar Alpha: Deep Teal(sRGB: 34,69,87), dE2K: 14.8
VGC: Turquoise(sRGB: 0,117,139), dE2K: 5.1
Dark Angels Green, sRGB: 21,51,36:
Army Painter: Angel Green(sRGB: 45,70,58), dE2K: 6.7
Citadel Base: Caliban Green(sRGB: 44,65,61), dE2K: 8.4
Citadel Layer: Vulkan Green(sRGB: 65,80,68), dE2K: 11.5
Instar Vintage: IV-15(sRGB: 34, 69, 63), dE2K: 7.4
Instar Paint: Military Green(sRGB: 52,71,67), dE2K: 9.8
Instar Alpha: Forest Green(sRGB: 31,47,41), dE2K: 6.7
VGC: Dark Green(sRGB: 47,67,57), dE2K: 7.1
Snot Green, sRGB: 33,102,56:
Army Painter: Greenskin(sRGB: 47,105,66), dE2K: 2.7
Citadel Base: Waaagh! Flesh(sRGB: 62,83,68), dE2K: 12.8
Citadel Layer: Warpstone Glow(sRGB: 33,103,62), dE2K: 1.4
Instar Vintage: IV-13(sRGB: 93,128,87), dE2K: 12.7
Instar Paint: Grass Green(sRGB: 23,109,65), dE2K: 2.9
Instar Alpha: Sea Green(sRGB: 59,74,66), dE2K: 16.9
VGC: Sick Green(sRGB: 71,112,76), dE2K: 6.7
Scorpion Green, sRGB: 107,167,58:
Army Painter: Jungle Green(sRGB: 90,169,44), dE2K: 2.4
Citadel Base: Ionrach Skin(sRGB: 166,164,138), dE2K: 19.6
Citadel Layer: Moot Green(sRGB: 92,143,50), dE2K: 7.9
Instar Vintage: IV-13(sRGB: 93,128,87), dE2K: 16.5
Instar Paint: Lime Green(sRGB: ), dE2K: 5.6
Instar Alpha: Acid Green(sRGB: 0,151,55), dE2K: 11.0
VGC: Scorpy Green(sRGB: 114,170,77), dE2K: 2.6
Goblin Green, sRGB: 87,124,77:
Army Painter: Goblin Green(sRGB: 66,123,74), dE2K: 3.8
Citadel Base: Death Guard Green(sRGB: 115,116,89), dE2K: 11.5
Citadel Layer: Warboss Green(sRGB: 85,117,77), dE2K: 3.0
Instar Vintage: IV-13(sRGB: 93,128,87), dE2K: 2.3
Instar Paint: Grass Green(sRGB: 23,109,65), dE2K: 10.0
Instar Alpha: Acid Green(sRGB: 0,151,55), dE2K: 13.4
VGC: Goblin Green(sRGB: 101,120,66), dE2K: 5.5
Rotting Flesh, sRGB: 175,173,129:
Army Painter: Necrotic Flesh(sRGB: 168,164,119), dE2K: 2.6
Citadel Base: Ionrach Skin(sRGB: 166,164,138), dE2K: 6.0
Citadel Layer: Krieg Khaki(sRGB: 176,171,122), dE2K: 1.7
Instar Vintage: IV-38(sRGB: 201,185,145), dE2K: 7.0
Instar Paint: Golden Sand(sRGB: 209,183,143), dE2K: 10.3
Instar Alpha: Dead Flesh(sRGB: 148,145,121), dE2K: 10.4
VGC: Dead Flesh(sRGB: 181,167,107), dE2K: 5.5
Camo Green, sRGB: 129,123,55:
Army Painter: Commando Green(sRGB: 104,120,54), dE2K: 7.5
Citadel Base: Death Guard Green(sRGB: 115,116,89), dE2K: 10.8
Citadel Layer: Elysian Green(sRGB: 124,123,67), dE2K: 3.1
Instar Vintage: IV-25(sRGB: 126,118,80), dE2K: 7.0
Instar Paint: Golden Brown(sRGB: 143,119,85), dE2K: 11.1
Instar Alpha: Dead Flesh(sRGB: 148,145,121), dE2K: 14.1
VGC: Camouflage Green(sRGB: 140,126,60), dE2K: 3.1
Scaly Green, sRGB: 0,74,76:
Army Painter: Angel Green(sRGB: 45,70,58), dE2K: 9.5
Citadel Base: Lupercal Green(sRGB: 42,68,69), dE2K: 7.7
Citadel Layer: Kabalite Green(sRGB: 0,91,82), dE2K: 7.6
Instar Vintage: IV-15(sRGB: 34, 69, 63), dE2K: 6.0
Instar Paint: Military Green(sRGB: 52,71,67), dE2K: 9.7
Instar Alpha: Sea Green(sRGB: 59,74,66), dE2K: 11.7
VGC: Scurvy Green(sRGB: 31,80,79), dE2K: 3.6
Shadow Grey, sRGB: 66,91,117:
Army Painter: Deep Blue(sRGB: 45,71,106), dE2K: 7.0
Citadel Base: The Fang(sRGB: 64,83,109), dE2K: 3.0
Citadel Layer: Alaitoc Blue(sRGB: 54,89,129), dE2K: 3.6
Instar Vintage: IV-33(sRGB: 65,92,120), dE2K: 0.9
Instar Paint: Grey Blue(sRGB: 58,77,104), dE2K: 5.0
Instar Alpha: Cement Grey(sRGB: 92,99,106), dE2K: 9.2
VGC: Heavy Blue(sRGB: 48,84,122), dE2K: 4.1
Space Wolves Grey, sRGB: 153,181,199:
Army Painter: Ice Storm(sRGB: 135,168,196), dE2K: 4.9
Citadel Base: Corax White(sRGB: 176,182,184), dE2K: 8.6
Citadel Layer: Blue Horror(sRGB: 157,187,201), dE2K: 3.0
Instar Vintage: IV-05(sRGB: 158,182,200), dE2K: 1.1
Instar Paint: Blue Steel(sRGB: 121,142,157), dE2K: 11.8
Instar Alpha: Pure White(sRGB: 244,241,231), dE2K: 21.7
VGC: Wolf Grey(sRGB: 167,184,195), dE2K: 4.0
Chaos Black, sRGB: 37,38,39:
Army Painter: Matt Black(sRGB: 52,53,54), dE2K: 4.9
Citadel Base: Abaddon Black(sRGB: 52,53,55), dE2K: 5.0
Citadel Layer: Eshin Grey(sRGB: 72,77,82), dE2K: 12.8
Instar Vintage: IV-02(sRGB: 76,75,74), dE2K: 12.4
Instar Paint: Obsidian Black(sRGB: 52,53,54), dE2K: 4.8
Instar Alpha: Pure Black(sRGB: 46,46,46), dE2K: 2.7
VGC: Black(sRGB: 54,54,55), dE2K: 5.4
Codex Grey, sRGB: 103,106,108:
Army Painter: Dungeon Grey(sRGB: 101,105,109), dE2K: 1.3
Citadel Base: Mechanicus Standard Grey(sRGB: 83,91,97), dE2K: 6.6
Citadel Layer: Dawnstone(sRGB: 110,114,117), dE2K: 3.2
Instar Vintage: IV-18(sRGB: 95,102,111), dE2K: 4.3
Instar Paint: Moon Grey(sRGB: 104, 107, 109), dE2K: 0.5
Instar Alpha: Cement Grey(sRGB: 92,99,106), dE2K: 4.2
VGC: Cold Grey(sRGB: 115,116,113), dE2K: 4.7
Fortress Grey, sRGB: 137,140,140:
Army Painter: Ash Grey(sRGB: 136,141,140), dE2K: 1.2
Citadel Base: Grey Seer(sRGB: 156,161,162), dE2K: 6.8
Citadel Layer: Administratum Grey(sRGB: 141,144,144), dE2K: 1.8
Instar Vintage: IV-35(sRGB: ), dE2K: 2.6
Instar Paint: Cool Grey(sRGB: 138,152,150), dE2K: 6.2
Instar Alpha: Dead Flesh(sRGB: 148,145,121), dE2K: 11.0
VGC: Heavy Bluegrey(sRGB: 123,134,138), dE2K: 4.6
Skull White, sRGB: 245,242,236:
Army Painter: Matt White(sRGB: 244,243,238), dE2K: 0.9
Citadel Base: Wraithbone(sRGB: 198,189,168), dE2K: 13.7 (Ceramite White is no longer in the Citadel Base range)
Citadel Layer: White Scar(sRGB: 239,240,237), dE2K: 2.3
Instar Vintage: IV-38(sRGB: 201,185,145), dE2K: 17.8
Instar Paint: Arctic White(sRGB: 246,244,241), dE2K: 1.3
Instar Alpha: Pure White(sRGB: 244,241,231), dE2K: 2.0
VGC: Arctic White(sRGB: 250,250,245), dE2K: 2.0
Tanned Flesh, sRGB: 155,91,83:
Army Painter: Fur Brown(sRGB: 134,86,72), dE2K: 5.8
Citadel Base: Bugman's Glow(sRGB: 139,94,91), dE2K: 5.0
Citadel Layer: Tuskgor Fur(sRGB: 140,76,69), dE2k: 5.3
Instar Vintage: IV-07(sRGB: 148,63,66), dE2K: 8.4
Instar Paint: Sunburnt Flesh(sRGB: 140,92,87), dE2K: 4.0
Instar Alpha: Salmon Pink(sRGB: 171,83,55), dE2K: 8.3
VGC: Tan(sRGB: 159,100,86), dE2K: 3.9
Terracotta, sRGB: 121,60,53:
Army Painter: Abomination Gore(sRGB: 135,56,53), dE2K: 3.5
Citadel Base: Khorne Red(sRGB: 120,57,61), dE2K: 4.7
Citadel Layer: Word Bearers Red(sRGB: 117,57,52), dE2k: 1.4
Instar Vintage: IV-07(sRGB: 148,63,66), dE2K: 6.5
Instar Paint: Wine Red(sRGB: 127,54,62), dE2K: 5.4
Instar Alpha: Deep Red(sRGB: 97,42,33), dE2K: 6.6
VGC: Tan(sRGB: 159,100,86), dE2K: 3.9
Graveyard Earth, sRGB: 118,94,73:
Army Painter: Leather Brown(sRGB: 116,88,70), dE2K: 3.4
Citadel Base: Steel Legion Drab(sRGB: 118,96,77), dE2K: 1.2
Citadel Layer: Gorthor Brown(sRGB: 112,86,76), dE2K: 6.7
Instar Vintage: IV-36(sRGB: 124,104,86), dE2K: 4.0
Instar Paint: Mud Brown(sRGB: 106,85,65), dE2K: 3.7
Instar Alpha: Milk Chocolate(sRGB: 121,80,61), dE2K: 8.0
VGC: Earth(sRGB: 123,96,68), dE2K: 2.7
Kommando Khaki, sRGB: 173,151,123:
Army Painter: Banshee Brown(sRGB: 188,166,139), dE2K: 4.6
Citadel Base: Morghast Bone(sRGB: 180,155,113), dE2K: 4.9
Citadel Layer: Karak Stone(sRGB: 152,135,112), dE2K: 6.0
Instar Vintage: IV-06(sRGB: 170,161,154), dE2K: 8.8
Instar Paint: Dust Brown(sRGB: 183,160,137), dE2K: 3.6
Instar Alpha: Dead Flesh(sRGB: 148,145,121), dE2K: 9.5
VGC: Khaki(sRGB: 160,135,106), dE2K: 5.0
Desert Yellow, sRGB: 152,124,79:
Army Painter: Desert Yellow(sRGB: 165,126,67), dE2K: 4.3
Citadel Base: Zandri Dust(sRGB: 149,126,92), dE2K: 3.2
Citadel Layer: Tallarn Sand(sRGB: 162,136,94), dE2K: 4.4
Instar Vintage: IV-32(sRGB: 65,92,120), dE2K: 5.6
Instar Paint: Golden Brown(sRGB: 143,119,85), dE2K: 3.6
Instar Alpha: Dark Tan(sRGB: 166,122,86), dE2K: 7.1
VGC: Desert Yellow(sRGB: 157,126,69), dE2K: 2.8
Catachan Green, sRGB: 80,82,68:
Army Painter: Cultist Robe(sRGB: 70,72,54), dE2K: 4.0
Citadel Base: Castellan Green(sRGB: 74,79,66), dE2K: 1.8
Citadel Layer: Vulkan Green(sRGB: 65,80,68), dE2K: 6.2
Instar Vintage: IV-02(sRGB: 76,75,74), dE2K: 7.3
Instar Paint: Jungle Green(sRGB: 68,77,64), dE2K: 3.9
Instar Alpha: Swamp Grey(sRGB: 64,66,57), dE2K: 5.8
VGC: Yellow Olive(sRGB: 84,88,73), dE2K: 2.2
The DeltaE2000 values are calculated using the CIE-L*ab and not the RGB values since the sRGB spectrum is much narrower than CIE-L*ab, what this means is that although the sRGB values for paints are very close, they can differ a lot more in the CIE-L*ab colour space.
Lower DeltaE2000 values are better. With a DeltaE2000 value around 1.0 between two paints, it’s extremely hard to see the difference between them even if you have the two paint swatches beside eachother.
Citadel49xxx was released in May of 2003, which means that all painting guides in White Dwarf from this date used the 49xxx until the next change which happened in ~2010.
The sRGB values are calculated from the reflectance values.
/Kalle