#636AF1#636AF1

#636AF1 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 59.2% C 0.199 H 276.2°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#636AF1
RGB	rgb(99, 106, 241)
HSL	hsl(237, 84%, 67%)
HSV	hsv(237, 59%, 95%)
CMYK	cmyk(58.9%, 56%, 0%, 5.5%)
CIE-LAB	lab(51.05, 36.29, -68.95)
CIE-LCH	lch(51.05, 77.92, 297.76°)
OKLab	oklab(59.24% 0.0216 -0.1979)
OKLCH	oklch(59.24% 0.199 276.2)
XYZ	xyz(26.1717, 19.3096, 85.5500)
Luminance	0.1931 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AF1 #F1EA63

analogous

#63B1F1 #636AF1 #A363F1

triadic

#636AF1 #F1636A #6AF163

tetradic

#636AF1 #F163B1 #F1EA63 #63F1A3

square

#636AF1 #F163B1 #F1EA63 #63F1A3

split-complementary

#636AF1 #F1A363 #B1F163

monochromatic

#121BC8 #2B34EC #636AF1 #9BA0F6 #D3D5FB

Accessibility & contrast

On white

4.32

#636AF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#636AF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AF1

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AF1	#FFFFFF	#000000	##000000
##636AF1	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F6

Deuteranopia (green-blind)

#0074EE

Tritanopia (blue-blind)

#008AA3

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636af1;
/* rgb */ color: rgb(99, 106, 241);
/* oklch */ color: oklch(59.2% 0.199 276.2);

Tailwind

colors: {
  custom: {
    50: '#9c94f6',
    500: '#636af1',
    950: '#000000',
  },
}

SCSS

$custom: #636af1;
$custom-light: #9c94f6;
$custom-dark: #000000;

JSON

{
  "hex": "#636af1",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 241
  },
  "hsl": {
    "h": 237.042,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.59242,
    "c": 0.19912,
    "h": 276.2
  },
  "luminance": 0.19312
}

Semantic roles & 50–950 ramp

primary

#636AF1

secondary

#EFEDC1

accent

#D506E0

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636AF1

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

Preview Lab → · Contrast checker → · Palette generator →