#636780#636780

#636780 is a mid, muted blue. Relative luminance 0.139; OKLCH L 52.0% C 0.040 H 277.8°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#636780
RGB	rgb(99, 103, 128)
HSL	hsl(232, 13%, 45%)
HSV	hsv(232, 23%, 50%)
CMYK	cmyk(22.7%, 19.5%, 0%, 49.8%)
CIE-LAB	lab(44.11, 4.30, -14.39)
CIE-LCH	lch(44.11, 15.01, 286.63°)
OKLab	oklab(51.97% 0.0054 -0.0393)
OKLCH	oklch(51.97% 0.04 277.8)
XYZ	xyz(13.8912, 13.9114, 22.3712)
Luminance	0.1391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636780 #807C63

analogous

#637680 #636780 #6E6380

triadic

#636780 #806367 #678063

tetradic

#636780 #806376 #807C63 #63806E

square

#636780 #806376 #807C63 #63806E

split-complementary

#636780 #806E63 #768063

monochromatic

#2E2F3B #484B5D #636780 #82869E #A4A7B9

Accessibility & contrast

On white

5.55

#636780 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#636780 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636780

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636780	#FFFFFF	#000000	##FFFFFF
##636780	1.00	5.55	3.78	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#606981

Deuteranopia (green-blind)

#5F677F

Tritanopia (blue-blind)

#5C6B6F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #636780;
/* rgb */ color: rgb(99, 103, 128);
/* oklch */ color: oklch(52.0% 0.040 277.8);

Tailwind

colors: {
  custom: {
    50: '#9092a5',
    500: '#636780',
    950: '#000000',
  },
}

SCSS

$custom: #636780;
$custom-light: #9092a5;
$custom-dark: #000000;

JSON

{
  "hex": "#636780",
  "rgb": {
    "r": 99,
    "g": 103,
    "b": 128
  },
  "hsl": {
    "h": 231.724,
    "s": 12.775,
    "l": 44.51
  },
  "oklch": {
    "l": 0.5197,
    "c": 0.03971,
    "h": 277.8
  },
  "luminance": 0.13912
}

Semantic roles & 50–950 ramp

primary

#636780

secondary

#A8A697

accent

#AC72B6

background

#F8F8FA

surface

#F0F0F4

border

#CBCBCE

text

#0C0D0F

muted

#7D7D7F

Preview Lab

Preview with #636780

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →