Spectrum Red & Orange Yellow +2

About this combination

Combination 257 of 348 in Wada's six-volume 1933 work. A 4-colour grouping of Spectrum Red, Orange Yellow, Blue, Aconite Violet, as documented in the original plates.

Historical context

Plate 257 of Wada's 348 anchors Spectrum Red, Orange Yellow, Blue and Aconite Violet in the red family — a 4-colour grouping with a refined, warm, bold 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 — Orange Yellow on Blue — reaches a contrast ratio of 2.96:1, below the WCAG text-contrast floor, so it reads best in decorative blocks rather than text pairings.