#636CD5#636CD5

#636CD5 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.7% C 0.159 H 276.5°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#636CD5
RGB	rgb(99, 108, 213)
HSL	hsl(235, 58%, 61%)
HSV	hsv(235, 54%, 84%)
CMYK	cmyk(53.5%, 49.3%, 0%, 16.5%)
CIE-LAB	lab(49.71, 26.12, -55.33)
CIE-LCH	lch(49.71, 61.18, 295.27°)
OKLab	oklab(57.66% 0.018 -0.1578)
OKLCH	oklch(57.66% 0.159 276.5)
XYZ	xyz(22.5146, 18.1804, 65.2607)
Luminance	0.1818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD5 #D5CC63

analogous

#63A5D5 #636CD5 #9363D5

triadic

#636CD5 #D5636C #6CD563

tetradic

#636CD5 #D563A5 #D5CC63 #63D593

square

#636CD5 #D563A5 #D5CC63 #63D593

split-complementary

#636CD5 #D59363 #A5D563

monochromatic

#283195 #3541C6 #636CD5 #9399E2 #C3C7EF

Accessibility & contrast

On white

4.53

#636CD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#636CD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD5

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD5	#FFFFFF	#000000	##000000
##636CD5	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397BD9

Deuteranopia (green-blind)

#2A72D3

Tritanopia (blue-blind)

#2D8396

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636cd5;
/* rgb */ color: rgb(99, 108, 213);
/* oklch */ color: oklch(57.7% 0.159 276.5);

Tailwind

colors: {
  custom: {
    50: '#9796e2',
    500: '#636cd5',
    950: '#000000',
  },
}

SCSS

$custom: #636cd5;
$custom-light: #9796e2;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd5",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 213
  },
  "hsl": {
    "h": 235.263,
    "s": 57.576,
    "l": 61.176
  },
  "oklch": {
    "l": 0.57661,
    "c": 0.15887,
    "h": 276.5
  },
  "luminance": 0.18182
}

Semantic roles & 50–950 ramp

primary

#636CD5

secondary

#DFDCB4

accent

#B820C5

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636CD5

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

Preview Lab → · Contrast checker → · Palette generator →