#3D9300 · #DD294B
Four independent scores (read the one that fits your goal): Readability 4/100 (fail) · Harmony 79/100 (triadic) · Distinguishable 53/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Basil and Crimson are very different (ΔE 120). They have distinctly different hues (106° apart) and their lightness is different, giving a clear light/dark split.
Basil text on Crimson: 1.20:1 (Fail); Crimson text on Basil: 1.20:1 (Fail). Neither meets AA at body size — nudging one color to #F1FFEC clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 79/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.2:1, below the 4.5:1 minimum. Nudging one colour to #F1FFEC clears AA.
Their CIE76 ΔE is about 120 — very different.
clearly different colours (ΔE 120).
Explore each color: Basil #3D9300 · Crimson #DD294B · Shades: Basil shades · Crimson shades · Contrast checker →