ChalkBlue vs Fog — Difference, Contrast & Harmony

ChalkBlueexact vs Fognearest

#CCDAD7 · #DED4CC

Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 91/100 (split-complementary) · Distinguishable 36/100 (hard to tell apart) · Match 80/100 (close). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.

Readability0Fail

The quick brown fox jumps over the lazy dog.

Fail1.0:1

Harmony91Split-complementary

Split-complementary

140° apart

Distinguishable36Hard to tell apart

normal

colorblind

ΔE 9.1

Match80Close

ΔE 9.1 — close

How different are ChalkBlue and Fog?

ChalkBlue and Fog are very close (ΔE 9). They have distinctly different hues (140° apart) and their lightness is similar, so they read as two same-weight colours.

Can you read one on the other?

ChalkBlue text on Fog: 1.01:1 (Fail); Fog text on ChalkBlue: 1.01:1 (Fail). Neither meets AA at body size — nudging one color to #535F5D clears it.

Common questions

Do ChalkBlue and Fog go well together?

Split-complementary — split-complementary — a recognised, balanced pairing (harmony 91/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.

Is ChalkBlue readable as text on Fog?

Not at body size — the best direction is only 1.0:1, below the 4.5:1 minimum. Nudging one colour to #535F5D clears AA.

What is the colour difference (ΔE) between ChalkBlue and Fog?

Their CIE76 ΔE is about 9 — very close.

Are ChalkBlue and Fog the same colour?

close but visibly different (ΔE 9.1).

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