About this combination
Combination 4 of 348 in Wada's six-volume 1933 work. A two-colour pairing of Isabella Color, Red Violet, as documented in the original plates.
Historical context
Plate 4 of Wada's 348 anchors Isabella Color and Red Violet in the yellow family — a 2-colour grouping with a refined, austere character, recorded in the Showa-era volumes of Sanzo Wada's 1933 Dictionary of Color Combinations, where these shikisai names have sat in the public domain for generations. Its strongest pairing — Isabella Color on Red Violet — reaches a contrast ratio of 4.73:1, meeting the WCAG AA bar for body text, so it holds up for text-on-colour layouts as well as decorative use.