About this combination
Combination 52 of 348 in Wada's six-volume 1933 work. A two-colour pairing of Sulpher Yellow, Black, as documented in the original plates.
Historical context
Plate 52 of Wada's 348 anchors Sulpher Yellow and Black 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 — Sulpher Yellow on Black — reaches a contrast ratio of 15.67:1, clearing the WCAG AAA bar for body text, so it holds up for text-on-colour layouts as well as decorative use.