#636CD2#636CD2

#636CD2 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.5% C 0.155 H 276.6°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#636CD2
RGB	rgb(99, 108, 210)
HSL	hsl(235, 55%, 61%)
HSV	hsv(235, 53%, 82%)
CMYK	cmyk(52.9%, 48.6%, 0%, 17.6%)
CIE-LAB	lab(49.53, 25.17, -53.91)
CIE-LCH	lch(49.53, 59.50, 295.02°)
OKLab	oklab(57.46% 0.0177 -0.1537)
OKLCH	oklch(57.46% 0.155 276.6)
XYZ	xyz(22.1373, 18.0295, 63.2738)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD2 #D2C963

analogous

#63A3D2 #636CD2 #9163D2

triadic

#636CD2 #D2636C #6CD263

tetradic

#636CD2 #D263A3 #D2C963 #63D291

square

#636CD2 #D263A3 #D2C963 #63D291

split-complementary

#636CD2 #D29163 #A3D263

monochromatic

#2A3291 #3743C0 #636CD2 #9299E0 #C2C6ED

Accessibility & contrast

On white

4.56

#636CD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#636CD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD2

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD2	#FFFFFF	#000000	##000000
##636CD2	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C7AD6

Deuteranopia (green-blind)

#2F71D0

Tritanopia (blue-blind)

#308295

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636cd2;
/* rgb */ color: rgb(99, 108, 210);
/* oklch */ color: oklch(57.5% 0.155 276.6);

Tailwind

colors: {
  custom: {
    50: '#9796e0',
    500: '#636cd2',
    950: '#000000',
  },
}

SCSS

$custom: #636cd2;
$custom-light: #9796e0;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd2",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 210
  },
  "hsl": {
    "h": 235.135,
    "s": 55.224,
    "l": 60.588
  },
  "oklch": {
    "l": 0.57464,
    "c": 0.1547,
    "h": 276.6
  },
  "luminance": 0.18031
}

Semantic roles & 50–950 ramp

primary

#636CD2

secondary

#DEDAB3

accent

#B623C3

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636CD2

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

Preview Lab → · Contrast checker → · Palette generator →