Blue vs Dark Slate Blue — Difference, Contrast & Harmony

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Bluenearest vs Dark Slate Bluenearest

#355396 · #5B478F

Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 97/100 (analogous) · Distinguishable 46/100 (somewhat similar) · Match 67/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.

Readability1Fail

The quick brown fox jumps over the lazy dog.

Fail1.0:1

Harmony97Analogous

Analogous

35° apart

Distinguishable46Somewhat similar

normal

tritanopia

ΔE 15 (13 under CVD)

Match67Different

ΔE 15 — different

How different are Blue and Dark Slate Blue?

Blue and Dark Slate Blue are a clear pair (ΔE 15). They have distinctly different hues (35° apart) and their lightness is similar, so they read as two same-weight colours.

Can you read one on the other?

Blue text on Dark Slate Blue: 1.03:1 (Fail); Dark Slate Blue text on Blue: 1.03:1 (Fail). Neither meets AA at body size — nudging one color to #ABC7FF clears it.

Common questions

Do Blue and Dark Slate Blue go well together?

Analogous — analogous — a recognised, balanced pairing (harmony 97/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.

Is Blue readable as text on Dark Slate Blue?

Not at body size — the best direction is only 1.0:1, below the 4.5:1 minimum. Nudging one colour to #ABC7FF clears AA.

What is the colour difference (ΔE) between Blue and Dark Slate Blue?

Their CIE76 ΔE is about 15 — a clear pair.

Are Blue and Dark Slate Blue the same colour?

clearly different colours (ΔE 15).

Related comparisons

Explore each color: Blue #355396 · Dark Slate Blue #5B478F · Shades: Blue shades · Dark Slate Blue shades · Contrast checker →

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