Combination 251

Sanzo Wada · Red · Yellow · Diamine Green · Slate Color

Combination 251 is a color combination of 4 colors, combination 251 in Sanzo Wada's A Dictionary of Colour Combinations (1933–34): Red #A72144, Yellow #FFF200, Diamine Green #1A7444, Slate Color #34454C. Its most readable text pair is #FFF200 on #34454C (WCAG 8.54:1, AAA). Some colors get hard to tell apart with color blindness (closest pair ΔE00 2). All of them print on coated paper (FOGRA39).

Colors converted from the book's printed CMYK by Matt DesLauriers, after Dain M. Blodorn Kim (MIT).

The colors

CMYK: Coated FOGRA39

Color	RGB	OKLCH	CMYK
#A72144 Red	167 33 68	(0.4814 0.1688 12.0)	24/97/56/18
#FFF200 Yellow	255 242 0	(0.9412 0.2004 105.7)	6/0/89/0
#1A7444 Diamine Green	26 116 68	(0.4954 0.1123 154.6)	85/30/86/18
#34454C Slate Color	52 69 76	(0.3786 0.0247 225.0)	76/55/50/48