#CED9E4 · #D4D7E5
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 89/100 (analogous) · Distinguishable 3/100 (hard to tell apart) · Match 93/100 (near match). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Light Gray and Gainsboro are very close (ΔE 3). They have closely related hues (19° apart) and their lightness is similar, so they read as two same-weight colours.
Light Gray text on Gainsboro: 1.00:1 (Fail); Gainsboro text on Light Gray: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #565F69 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 89/100). 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 #565F69 clears AA.
Their CIE76 ΔE is about 3 — very close.
a very near match (ΔE 3.2) — fine for most matching.
Explore each color: Light Gray #CED9E4 · Gainsboro #D4D7E5 · Shades: Light Gray shades · Gainsboro shades · Contrast checker →