#63666F

Accessibility

5.74:1

Vs white / black

5.74:1 · 3.66:1

Sources

Library color

Click any stop to open

Codes

Formats

HEX

#63666f

RGB

rgb(99, 102, 111)

RGBA

rgba(99, 102, 111, 1)

HSL

hsl(225, 6%, 41%)

HSV

hsv(225, 11%, 44%)

LAB

lab(43.22% 0.82 -5.45)

LCH

lch(43.22% 5.51 278.56)

OKLAB

oklab(0.5108 0.0003 -0.0147)

OKLCH

oklch(0.5108 0.0147 271.17)

XYZ

xyz(12.77, 13.30, 16.93)

CMYK

cmyk(11%, 8%, 0%, 56%)

CSS

color: #63666f;

CSS variable

--color-63666f: #63666f;

SCSS

$color-63666f: #63666f;

Tailwind

slate-500

Export

Developer code

:root {
  --#63666f-1: #63666f;
}

Palette

Tints & shades

Full scale from light tints through the base color into deep shades

f2f2f3 e5e6e7 d8d9db cbcccf bebfc3 b1b3b7 a4a6ab 97999f 8a8c93 7d8087 70737b 63666f 5b5e66 53555d 4a4d53 42444a 3a3b41 323338 292a2e 212225 191a1c 101112 080909

Palette

Tints

Mixed toward white — soft backgrounds and highlights

f2f2f3 e5e6e7 d8d9db cbcccf bebfc3 b1b3b7 a4a6ab 97999f 8a8c93 7d8087 70737b

Palette

Shades

Mixed toward black — depth, text, and emphasis

5b5e66 53555d 4a4d53 42444a 3a3b41 323338 292a2e 212225 191a1c 101112 080909

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

656870 686a72 6a6d73 6d6f75 6f7176 727378 747579 76777a 797a7c 7b7c7d 7e7e7f

Harmony

Complementary

Opposite on the color wheel for contrast

#63666FStop 1 #6F6C62Stop 2

Harmony

Analogous

Neighbors that sit comfortably together

#626C6FStop 1 #63666FStop 2 #65626FStop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#63666FStop 1 #6F6265Stop 2 #656F62Stop 3

Harmony

Split complementary

Base plus two accents beside the complement

#63666FStop 1 #6F6562Stop 2 #6C6F62Stop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#303136Stop 1 #54575FStop 2 #787C87Stop 3 #A0A3ABStop 4 #C9CACFStop 5

Meaning

Color psychology

Calm professionalism with cool neutrality. Excellent for dashboards and docs.

Common uses: primary buttons, chart series, status badges, marketing gradients, and brand accents in the Blue Grey family.

Similar & related colors

Nearby colors from the library by perceptual distance

Web Safe #666666#666666 DimGray#696969 Material Grey 700#616161 Bootstrap secondary#6C757D Fill Tertiary#787880 Fluent Gray#605E5C Material Grey 600#757575 Material You Secondary#625B71 Chakra gray 600#4A5568 Tailwind slate 500#64748B Tailwind slate 600#475569 SlateGray#708090