#CBCBCB · #FFFFFF
Four independent scores (read the one that fits your goal): Readability 12/100 (fail) · Harmony 100/100 (monochrome) · Distinguishable 55/100 (somewhat similar) · Match 60/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
CerebellumGrey and White are a clear pair (ΔE 18). They have closely related hues (0° apart) and their lightness is different, giving a clear light/dark split.
CerebellumGrey text on White: 1.62:1 (Fail); White text on CerebellumGrey: 1.62:1 (Fail). Neither meets AA at body size — nudging one color to #767676 clears it.
Monochrome — monochrome — a recognised, balanced pairing (harmony 100/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.6:1, below the 4.5:1 minimum. Nudging one colour to #767676 clears AA.
Their CIE76 ΔE is about 18 — a clear pair.
clearly different colours (ΔE 18).
Explore each color: CerebellumGrey #CBCBCB · White #FFFFFF · Shades: CerebellumGrey shades · White shades · Contrast checker →