#636AE3#636AE3

#636AE3 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.2% C 0.181 H 276.7°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#636AE3
RGB	rgb(99, 106, 227)
HSL	hsl(237, 70%, 64%)
HSV	hsv(237, 56%, 89%)
CMYK	cmyk(56.4%, 53.3%, 0%, 11%)
CIE-LAB	lab(50.10, 31.80, -62.62)
CIE-LCH	lch(50.10, 70.24, 296.92°)
OKLab	oklab(58.24% 0.0212 -0.1793)
OKLCH	oklch(58.24% 0.181 276.7)
XYZ	xyz(24.1603, 18.5051, 74.9568)
Luminance	0.1851 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AE3 #E3DC63

analogous

#63AAE3 #636AE3 #9C63E3

triadic

#636AE3 #E3636A #6AE363

tetradic

#636AE3 #E363AA #E3DC63 #63E39C

square

#636AE3 #E363AA #E3DC63 #63E39C

split-complementary

#636AE3 #E39C63 #AAE363

monochromatic

#1F27AD #2F38DA #636AE3 #979CEC #CBCDF6

Accessibility & contrast

On white

4.47

#636AE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#636AE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AE3

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AE3	#FFFFFF	#000000	##000000
##636AE3	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E7DE7

Deuteranopia (green-blind)

#0072E0

Tritanopia (blue-blind)

#16869C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #636ae3;
/* rgb */ color: rgb(99, 106, 227);
/* oklch */ color: oklch(58.2% 0.181 276.7);

Tailwind

colors: {
  custom: {
    50: '#9994ed',
    500: '#636ae3',
    950: '#000000',
  },
}

SCSS

$custom: #636ae3;
$custom-light: #9994ed;
$custom-dark: #000000;

JSON

{
  "hex": "#636ae3",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 227
  },
  "hsl": {
    "h": 236.719,
    "s": 69.565,
    "l": 63.922
  },
  "oklch": {
    "l": 0.58237,
    "c": 0.18057,
    "h": 276.7
  },
  "luminance": 0.18507
}

Semantic roles & 50–950 ramp

primary

#636AE3

secondary

#E7E5BA

accent

#C714D2

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #636AE3

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

Preview Lab → · Contrast checker → · Palette generator →