#636DA7#636DA7

#636DA7 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.1% C 0.091 H 275.5°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#636DA7
RGB	rgb(99, 109, 167)
HSL	hsl(231, 28%, 52%)
HSV	hsv(231, 41%, 65%)
CMYK	cmyk(40.7%, 34.7%, 0%, 34.5%)
CIE-LAB	lab(47.47, 11.35, -32.35)
CIE-LCH	lch(47.47, 34.28, 289.33°)
OKLab	oklab(55.13% 0.0088 -0.0906)
OKLCH	oklch(55.13% 0.091 275.5)
XYZ	xyz(17.5872, 16.3792, 38.7865)
Luminance	0.1638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636DA7 #A79D63

analogous

#638FA7 #636DA7 #7B63A7

triadic

#636DA7 #A7636D #6DA763

tetradic

#636DA7 #A7638F #A79D63 #63A77B

square

#636DA7 #A7638F #A79D63 #63A77B

split-complementary

#636DA7 #A77B63 #8FA763

monochromatic

#343A5C #4A5283 #636DA7 #8A92BD #B1B6D3

Accessibility & contrast

On white

4.91

#636DA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#636DA7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636DA7

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636DA7	#FFFFFF	#000000	##FFFFFF
##636DA7	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5973A9

Deuteranopia (green-blind)

#546EA6

Tritanopia (blue-blind)

#4E7982

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #636da7;
/* rgb */ color: rgb(99, 109, 167);
/* oklch */ color: oklch(55.1% 0.091 275.5);

Tailwind

colors: {
  custom: {
    50: '#9296c1',
    500: '#636da7',
    950: '#000000',
  },
}

SCSS

$custom: #636da7;
$custom-light: #9296c1;
$custom-dark: #000000;

JSON

{
  "hex": "#636da7",
  "rgb": {
    "r": 99,
    "g": 109,
    "b": 167
  },
  "hsl": {
    "h": 231.176,
    "s": 27.869,
    "l": 52.157
  },
  "oklch": {
    "l": 0.55131,
    "c": 0.09108,
    "h": 275.5
  },
  "luminance": 0.1638
}

Semantic roles & 50–950 ramp

primary

#636DA7

secondary

#C2BDA4

accent

#B664C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #636DA7

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

Preview Lab → · Contrast checker → · Palette generator →