Slate Grey (666B7E) — Shades, Harmonies, Palettes, CSS Code

"Slate Grey"

Neutral · Timeless

🧠 Psychology

Neutral and timeless color. Evokes elegance, sobriety and minimalism.

✨ Uses

UI design, backgrounds, typography, professional interfaces.

Tip

Slate Grey pairs ideally with #F7F5F0 (off-white) and a neutral background for a modern, readable result.

Values

HEX #666B7E

RGB rgb(102, 107, 126)

HSL hsl(228°, 11%, 45%)

CMYK C:19% M:15% Y:0% K:51%

Luminance 0.1495

WCAG Accessibility

On white 5.29:1

Aa — #666B7E

Secondary text

✓ AA ✗ AAA ✓ AA Large

On black 3.97:1

Aa — #666B7E

Secondary text

✗ AA ✗ AAA ✓ AA Large

50 100 200 300 400 500 600 700 800 900 950

All harmonies

Complementary

#666B7E #7F7A66

Analogous

#66787F #666B7E #6E667F

Triadic

#666B7E #7F666B #6B7F66

Split-comp.

#666B7E #7F6E66 #787F66

Tetradic

#666B7E #7F6678 #7F7A66 #667F6E

Monochromatic

#D8D9D9 #A5A5A7 #727274 #58595A #323334

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