#CCE0D2 · #D5DECA
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 63/100 (analogous (soft)) · Distinguishable 19/100 (hard to tell apart) · Match 89/100 (near match). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Gainsboro and Bone are very close (ΔE 5). They have distinctly different hues (51° apart) and their lightness is similar, so they read as two same-weight colours.
Gainsboro text on Bone: 1.00:1 (Fail); Bone text on Gainsboro: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #536459 clears it.
Analogous (soft) — workable but not a textbook harmony (harmony 63/100). 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 #536459 clears AA.
Their CIE76 ΔE is about 5 — very close.
a very near match (ΔE 5.0) — fine for most matching.
Explore each color: Gainsboro #CCE0D2 · Bone #D5DECA · Shades: Gainsboro shades · Bone shades · Contrast checker →