#D9DFE2 · #E2DDDA
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 99/100 (complementary) · Distinguishable 20/100 (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.
Mainsail and Gainsboro are very close (ΔE 5). They have near-opposite hues (177° apart) and their lightness is similar, so they read as two same-weight colours.
Mainsail text on Gainsboro: 1.00:1 (Fail); Gainsboro text on Mainsail: 1.00:1 (Fail). Neither meets AA at body size — nudging one color to #5E6366 clears it.
Complementary — complementary — 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 #5E6366 clears AA.
Their CIE76 ΔE is about 5 — very close.
a very near match (ΔE 5.0) — fine for most matching.
Explore each color: Mainsail #D9DFE2 · Gainsboro #E2DDDA · Shades: Mainsail shades · Gainsboro shades · Contrast checker →