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ColorArchive
RGB
rgb(81, 87, 92)
HSL
hsl(210, 6%, 34%)
CMYK
cmyk(12%, 5%, 0%, 64%)
Metrics
S 6% · L 34%
Contrast (WCAG)
on white
7.3:1AA
on black
2.9:1Fail
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About this color

Cool Gray Dusk (#51575C) belongs to the blue family — hue 210°, 6% saturation, 34% lightness. Copy the hex, RGB, or HSL value above, or paste the CSS custom property below into your stylesheet to reference this color directly.

CSS
:root {
  --colorarchive-cool-gray-dusk: #51575C;
  --colorarchive-cool-gray-dusk-hsl: hsl(210, 6%, 34%);
  --colorarchive-cool-gray-dusk-rgb: rgb(81, 87, 92);
}

AI Color Names

Let AI suggest alternative poetic names for this color in English and Chinese.

Tonal strip

All lightness levels at this hue and saturation. Click any to navigate.

Palette moves

Instead of stopping at one swatch, use nearby, opposite, and tonal neighbors to branch into a broader palette.

Export preview
Base: Cool Gray Dusk #51575C
Lighter companion: Cool Gray Velvet #656B72
Darker companion: Cool Gray Shadow #43474C
Complementary counterpoint: Warm Gray Dusk #5C5751
Analogous lead: Indigo Dusk Faint #4E515F
Analogous echo: Cerulean Dusk Faint #4E5C5F
Triadic +120°: Blush Dusk Faint #5F4E57
Triadic +240°: Lime Dusk Faint #575F4E
Split-comp +150°: Crimson Dusk Faint #5F4E4E
Split-comp +210°: Citrine Dusk Faint #5F5F4E

Accessible pairings

Archive colors that meet WCAG contrast standards when paired with this color. Use as text-on-background or background-on-text.

Contrast checker

Color Vision Simulation

How this color appears with different color vision deficiencies.

Full simulator
Deuteranopia
#53535B
Protanopia
#54545B
Tritanopia
#515A5A
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