Haishoku Sōkan — combination no. 37

• ground
  Red Violet菖蒲色 #59256aoklch(37.1% 0.124 316.9)rgb(89, 37, 106)
• type + accent
  Brick Red柿色 #a84222oklch(51.3% 0.142 37.5)rgb(168, 66, 34)

Highest-contrast pair: Brick Red on Red Violet, 1.83:1 (decorative only; add a neutral for text).

/* Sanzo Wada — Haishoku Sōkan — combination no. 37 */
:root {
  --wada-brick-red: #a84222; /* oklch(51.3% 0.142 37.5) · 柿色 */
  --wada-red-violet: #59256a; /* oklch(37.1% 0.124 316.9) · 菖蒲色 */

  /* suggested roles */
  --ground: var(--wada-red-violet);
  --type: var(--wada-brick-red);
  --accent: var(--wada-brick-red);
}

/* OKLCH variant */
:root {
  --wada-brick-red: oklch(51.3% 0.142 37.5);
  --wada-red-violet: oklch(37.1% 0.124 316.9);
}

Source crosswalk: port number 37; authenticated modern page/plate and membership remain unresolved.

Download c37 JSON with IDs and provenance. Roles are suggestions computed from OKLCH chroma and contrast, not from Wada.