#636AFA#636AFA

#636AFA is a mid, highly saturated blue. Relative luminance 0.199; OKLCH L 59.9% C 0.211 H 275.9°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#636AFA
RGB	rgb(99, 106, 250)
HSL	hsl(237, 94%, 68%)
HSV	hsv(237, 60%, 98%)
CMYK	cmyk(60.4%, 57.6%, 0%, 2%)
CIE-LAB	lab(51.68, 39.18, -72.94)
CIE-LCH	lch(51.68, 82.79, 298.24°)
OKLab	oklab(59.91% 0.0216 -0.2097)
OKLCH	oklch(59.91% 0.211 275.9)
XYZ	xyz(27.5493, 19.8607, 92.8057)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AFA #FAF363

analogous

#63B5FA #636AFA #A863FA

triadic

#636AFA #FA636A #6AFA63

tetradic

#636AFA #FA63B5 #FAF363 #63FAA8

square

#636AFA #FA63B5 #FAF363 #63FAA8

split-complementary

#636AFA #FAA863 #B5FA63

monochromatic

#0711DC #2831F8 #636AFA #9EA3FC #DADBFE

Accessibility & contrast

On white

4.22

#636AFA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#636AFA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AFA

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AFA	#FFFFFF	#000000	##000000
##636AFA	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0082FF

Deuteranopia (green-blind)

#0075F7

Tritanopia (blue-blind)

#008DA8

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #636afa;
/* rgb */ color: rgb(99, 106, 250);
/* oklch */ color: oklch(59.9% 0.211 275.9);

Tailwind

colors: {
  custom: {
    50: '#9d94fd',
    500: '#636afa',
    950: '#000000',
  },
}

SCSS

$custom: #636afa;
$custom-light: #9d94fd;
$custom-dark: #000000;

JSON

{
  "hex": "#636afa",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 250
  },
  "hsl": {
    "h": 237.219,
    "s": 93.789,
    "l": 68.431
  },
  "oklch": {
    "l": 0.59911,
    "c": 0.21078,
    "h": 275.9
  },
  "luminance": 0.19863
}

Semantic roles & 50–950 ramp

primary

#636AFA

secondary

#F3F1C6

accent

#DB00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #636AFA

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

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