#C3D8D8 · #C6D8D0
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 99/100 (analogous) · Distinguishable 12/100 (hard to tell apart) · Match 91/100 (near match). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Light Gray and TidePools are very close (ΔE 4). They have distinctly different hues (27° apart) and their lightness is similar, so they read as two same-weight colours.
Light Gray text on TidePools: 1.00:1 (Fail); TidePools text on Light Gray: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #4D5F60 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 99/100). 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 #4D5F60 clears AA.
Their CIE76 ΔE is about 4 — very close.
a very near match (ΔE 4.3) — fine for most matching.
Explore each color: Light Gray #C3D8D8 · TidePools #C6D8D0 · Shades: Light Gray shades · TidePools shades · Contrast checker →