#636CEB#636CEB

#636CEB is a mid, vivid blue. Relative luminance 0.194; OKLCH L 59.2% C 0.189 H 275.9°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#636CEB
RGB	rgb(99, 108, 235)
HSL	hsl(236, 77%, 65%)
HSV	hsv(236, 58%, 92%)
CMYK	cmyk(57.9%, 54%, 0%, 7.8%)
CIE-LAB	lab(51.12, 33.16, -65.47)
CIE-LCH	lch(51.12, 73.39, 296.86°)
OKLab	oklab(59.17% 0.0195 -0.1877)
OKLCH	oklch(59.17% 0.189 275.9)
XYZ	xyz(25.4987, 19.3740, 80.9770)
Luminance	0.1938 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CEB #EBE263

analogous

#63B0EB #636CEB #9E63EB

triadic

#636CEB #EB636C #6CEB63

tetradic

#636CEB #EB63B0 #EBE263 #63EB9E

square

#636CEB #EB63B0 #EBE263 #63EB9E

split-complementary

#636CEB #EB9E63 #B0EB63

monochromatic

#1823BC #2D39E4 #636CEB #999FF2 #CFD2F9

Accessibility & contrast

On white

4.31

#636CEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#636CEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CEB

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CEB	#FFFFFF	#000000	##000000
##636CEB	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1380EF

Deuteranopia (green-blind)

#0074E8

Tritanopia (blue-blind)

#008AA1

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636ceb;
/* rgb */ color: rgb(99, 108, 235);
/* oklch */ color: oklch(59.2% 0.189 275.9);

Tailwind

colors: {
  custom: {
    50: '#9b96f2',
    500: '#636ceb',
    950: '#000000',
  },
}

SCSS

$custom: #636ceb;
$custom-light: #9b96f2;
$custom-dark: #000000;

JSON

{
  "hex": "#636ceb",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 235
  },
  "hsl": {
    "h": 236.029,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.59168,
    "c": 0.1887,
    "h": 275.9
  },
  "luminance": 0.19376
}

Semantic roles & 50–950 ramp

primary

#636CEB

secondary

#ECE9BE

accent

#CC0CDA

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636CEB

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

Preview Lab → · Contrast checker → · Palette generator →