red (ISCC-NBS level 2) strong red 2026-09-18 12 s.R H 1R-7R; V [3.5, 5.5]; C [11, 13] interior 12 3 supporting_quality_class 4.0R 4.5/12.0 A color whose Munsell hue, value, and chroma fall within ISCC-NBS color-name block 12 (strong red), for which the published central notation is 4.0R 4.5/12.0.