#99CA98 · #9FBBF3
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 74/100 (triadic) · Distinguishable 56/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Dark Sea Green and Light Steel Blue are very different (ΔE 59). They have distinctly different hues (101° apart) and their lightness is similar, so they read as two same-weight colours.
Dark Sea Green text on Light Steel Blue: 1.03:1 (Fail); Light Steel Blue text on Dark Sea Green: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #285429 clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 74/100). 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 #285429 clears AA.
Their CIE76 ΔE is about 59 — very different.
clearly different colours (ΔE 59).
Explore each color: Dark Sea Green #99CA98 · Light Steel Blue #9FBBF3 · Shades: Dark Sea Green shades · Light Steel Blue shades · Contrast checker →