#636AF0#636AF0

#636AF0 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 59.2% C 0.198 H 276.3°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#636AF0
RGB	rgb(99, 106, 240)
HSL	hsl(237, 82%, 66%)
HSV	hsv(237, 59%, 94%)
CMYK	cmyk(58.8%, 55.8%, 0%, 5.9%)
CIE-LAB	lab(50.98, 35.97, -68.51)
CIE-LCH	lch(50.98, 77.37, 297.70°)
OKLab	oklab(59.17% 0.0216 -0.1966)
OKLCH	oklch(59.17% 0.198 276.3)
XYZ	xyz(26.0227, 19.2500, 84.7655)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AF0 #F0E963

analogous

#63B1F0 #636AF0 #A363F0

triadic

#636AF0 #F0636A #6AF063

tetradic

#636AF0 #F063B1 #F0E963 #63F0A3

square

#636AF0 #F063B1 #F0E963 #63F0A3

split-complementary

#636AF0 #F0A363 #B1F063

monochromatic

#131CC6 #2B35EB #636AF0 #9B9FF5 #D3D5FB

Accessibility & contrast

On white

4.33

#636AF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#636AF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AF0

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AF0	#FFFFFF	#000000	##000000
##636AF0	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F5

Deuteranopia (green-blind)

#0074ED

Tritanopia (blue-blind)

#008AA3

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #636af0;
/* rgb */ color: rgb(99, 106, 240);
/* oklch */ color: oklch(59.2% 0.198 276.3);

Tailwind

colors: {
  custom: {
    50: '#9b94f6',
    500: '#636af0',
    950: '#000000',
  },
}

SCSS

$custom: #636af0;
$custom-light: #9b94f6;
$custom-dark: #000000;

JSON

{
  "hex": "#636af0",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 240
  },
  "hsl": {
    "h": 237.021,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.59169,
    "c": 0.19781,
    "h": 276.3
  },
  "luminance": 0.19252
}

Semantic roles & 50–950 ramp

primary

#636AF0

secondary

#EEECC1

accent

#D407DF

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636AF0

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

Preview Lab → · Contrast checker → · Palette generator →