#636CD0#636CD0

#636CD0 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.3% C 0.152 H 276.6°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#636CD0
RGB	rgb(99, 108, 208)
HSL	hsl(235, 54%, 60%)
HSV	hsv(235, 52%, 82%)
CMYK	cmyk(52.4%, 48.1%, 0%, 18.4%)
CIE-LAB	lab(49.41, 24.53, -52.96)
CIE-LCH	lch(49.41, 58.37, 294.85°)
OKLab	oklab(57.34% 0.0175 -0.1509)
OKLCH	oklch(57.34% 0.152 276.6)
XYZ	xyz(21.8897, 17.9305, 61.9697)
Luminance	0.1793 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD0 #D0C763

analogous

#63A2D0 #636CD0 #9063D0

triadic

#636CD0 #D0636C #6CD063

tetradic

#636CD0 #D063A2 #D0C763 #63D090

square

#636CD0 #D063A2 #D0C763 #63D090

split-complementary

#636CD0 #D09063 #A2D063

monochromatic

#2B338E #3944BD #636CD0 #9298DE #C1C5EC

Accessibility & contrast

On white

4.58

#636CD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#636CD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD0

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD0	#FFFFFF	#000000	##000000
##636CD0	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7AD4

Deuteranopia (green-blind)

#3171CE

Tritanopia (blue-blind)

#328294

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #636cd0;
/* rgb */ color: rgb(99, 108, 208);
/* oklch */ color: oklch(57.3% 0.152 276.6);

Tailwind

colors: {
  custom: {
    50: '#9796df',
    500: '#636cd0',
    950: '#000000',
  },
}

SCSS

$custom: #636cd0;
$custom-light: #9796df;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd0",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 208
  },
  "hsl": {
    "h": 235.046,
    "s": 53.695,
    "l": 60.196
  },
  "oklch": {
    "l": 0.57335,
    "c": 0.15191,
    "h": 276.6
  },
  "luminance": 0.17932
}

Semantic roles & 50–950 ramp

primary

#636CD0

secondary

#DCD9B3

accent

#B424C1

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636CD0

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

Preview Lab → · Contrast checker → · Palette generator →