#636CD3#636CD3

#636CD3 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.5% C 0.156 H 276.6°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#636CD3
RGB	rgb(99, 108, 211)
HSL	hsl(235, 56%, 61%)
HSV	hsv(235, 53%, 83%)
CMYK	cmyk(53.1%, 48.8%, 0%, 17.3%)
CIE-LAB	lab(49.59, 25.48, -54.38)
CIE-LCH	lch(49.59, 60.06, 295.11°)
OKLab	oklab(57.53% 0.0178 -0.1551)
OKLCH	oklch(57.53% 0.156 276.6)
XYZ	xyz(22.2623, 18.0795, 63.9320)
Luminance	0.1808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD3 #D3CA63

analogous

#63A4D3 #636CD3 #9263D3

triadic

#636CD3 #D3636C #6CD363

tetradic

#636CD3 #D363A4 #D3CA63 #63D392

square

#636CD3 #D363A4 #D3CA63 #63D392

split-complementary

#636CD3 #D39263 #A4D363

monochromatic

#293292 #3742C2 #636CD3 #9399E0 #C2C6EE

Accessibility & contrast

On white

4.55

#636CD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#636CD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD3

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD3	#FFFFFF	#000000	##000000
##636CD3	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7BD7

Deuteranopia (green-blind)

#2D71D1

Tritanopia (blue-blind)

#2F8395

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636cd3;
/* rgb */ color: rgb(99, 108, 211);
/* oklch */ color: oklch(57.5% 0.156 276.6);

Tailwind

colors: {
  custom: {
    50: '#9796e1',
    500: '#636cd3',
    950: '#000000',
  },
}

SCSS

$custom: #636cd3;
$custom-light: #9796e1;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd3",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 211
  },
  "hsl": {
    "h": 235.179,
    "s": 56,
    "l": 60.784
  },
  "oklch": {
    "l": 0.57529,
    "c": 0.15609,
    "h": 276.6
  },
  "luminance": 0.18081
}

Semantic roles & 50–950 ramp

primary

#636CD3

secondary

#DEDBB4

accent

#B722C4

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636CD3

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

Preview Lab → · Contrast checker → · Palette generator →