#636CDC#636CDC

#636CDC is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.1% C 0.169 H 276.4°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#636CDC
RGB	rgb(99, 108, 220)
HSL	hsl(236, 63%, 63%)
HSV	hsv(236, 55%, 86%)
CMYK	cmyk(55%, 50.9%, 0%, 13.7%)
CIE-LAB	lab(50.15, 28.35, -58.60)
CIE-LCH	lch(50.15, 65.10, 295.82°)
OKLab	oklab(58.13% 0.0187 -0.1675)
OKLCH	oklch(58.13% 0.169 276.4)
XYZ	xyz(23.4223, 18.5435, 70.0413)
Luminance	0.1855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CDC #DCD363

analogous

#63A9DC #636CDC #9663DC

triadic

#636CDC #DC636C #6CDC63

tetradic

#636CDC #DC63A9 #DCD363 #63DC96

square

#636CDC #DC63A9 #DCD363 #63DC96

split-complementary

#636CDC #DC9663 #A9DC63

monochromatic

#242DA1 #313DD1 #636CDC #959BE7 #C7CAF2

Accessibility & contrast

On white

4.46

#636CDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#636CDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CDC

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CDC	#FFFFFF	#000000	##000000
##636CDC	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#317CE0

Deuteranopia (green-blind)

#1C72DA

Tritanopia (blue-blind)

#23859A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #636cdc;
/* rgb */ color: rgb(99, 108, 220);
/* oklch */ color: oklch(58.1% 0.169 276.4);

Tailwind

colors: {
  custom: {
    50: '#9896e7',
    500: '#636cdc',
    950: '#000000',
  },
}

SCSS

$custom: #636cdc;
$custom-light: #9896e7;
$custom-dark: #000000;

JSON

{
  "hex": "#636cdc",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 220
  },
  "hsl": {
    "h": 235.537,
    "s": 63.351,
    "l": 62.549
  },
  "oklch": {
    "l": 0.58128,
    "c": 0.1685,
    "h": 276.4
  },
  "luminance": 0.18545
}

Semantic roles & 50–950 ramp

primary

#636CDC

secondary

#E3E0B7

accent

#BE1ACB

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #636CDC

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

Preview Lab → · Contrast checker → · Palette generator →