#636AE9#636AE9

#636AE9 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.7% C 0.189 H 276.5°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#636AE9
RGB	rgb(99, 106, 233)
HSL	hsl(237, 75%, 65%)
HSV	hsv(237, 58%, 91%)
CMYK	cmyk(57.5%, 54.5%, 0%, 8.6%)
CIE-LAB	lab(50.50, 33.73, -65.36)
CIE-LCH	lch(50.50, 73.54, 297.30°)
OKLab	oklab(58.66% 0.0214 -0.1874)
OKLCH	oklch(58.66% 0.189 276.5)
XYZ	xyz(25.0029, 18.8421, 79.3943)
Luminance	0.1884 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AE9 #E9E263

analogous

#63ADE9 #636AE9 #9F63E9

triadic

#636AE9 #E9636A #6AE963

tetradic

#636AE9 #E963AD #E9E263 #63E99F

square

#636AE9 #E963AD #E9E263 #63E99F

split-complementary

#636AE9 #E99F63 #ADE963

monochromatic

#1A22B8 #2D37E1 #636AE9 #999DF1 #CED0F8

Accessibility & contrast

On white

4.40

#636AE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#636AE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AE9

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AE9	#FFFFFF	#000000	##000000
##636AE9	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C7EED

Deuteranopia (green-blind)

#0073E6

Tritanopia (blue-blind)

#00889F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #636ae9;
/* rgb */ color: rgb(99, 106, 233);
/* oklch */ color: oklch(58.7% 0.189 276.5);

Tailwind

colors: {
  custom: {
    50: '#9a94f1',
    500: '#636ae9',
    950: '#000000',
  },
}

SCSS

$custom: #636ae9;
$custom-light: #9a94f1;
$custom-dark: #000000;

JSON

{
  "hex": "#636ae9",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 233
  },
  "hsl": {
    "h": 236.866,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.58663,
    "c": 0.18858,
    "h": 276.5
  },
  "luminance": 0.18844
}

Semantic roles & 50–950 ramp

primary

#636AE9

secondary

#EBE8BD

accent

#CD0ED7

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636AE9

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

Preview Lab → · Contrast checker → · Palette generator →