#143F55 · #3A3E16
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 84/100 (triadic) · Distinguishable 74/100 (easy to tell apart) · Match 10/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Charcoal and Deep Lime are very different (ΔE 41). They have distinctly different hues (134° apart) and their lightness is similar, so they read as two same-weight colours.
Charcoal text on Deep Lime: 1.00:1 (Fail); Deep Lime text on Charcoal: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #7FABC4 clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 84/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.0:1, below the 4.5:1 minimum. Nudging one colour to #7FABC4 clears AA.
Their CIE76 ΔE is about 41 — very different.
clearly different colours (ΔE 41).
Explore each color: Charcoal #143F55 · Deep Lime #3A3E16 · Shades: Charcoal shades · Deep Lime shades · Contrast checker →