#636EF0#636EF0

#636EF0 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.9% C 0.193 H 275.3°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#636EF0
RGB	rgb(99, 110, 240)
HSL	hsl(235, 82%, 66%)
HSV	hsv(235, 59%, 94%)
CMYK	cmyk(58.8%, 54.2%, 0%, 5.9%)
CIE-LAB	lab(51.94, 33.56, -66.94)
CIE-LCH	lch(51.94, 74.88, 296.62°)
OKLab	oklab(59.89% 0.0178 -0.192)
OKLCH	oklch(59.89% 0.193 275.3)
XYZ	xyz(26.4446, 20.0938, 84.9061)
Luminance	0.2010 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EF0 #F0E563

analogous

#63B5F0 #636EF0 #9F63F0

triadic

#636EF0 #F0636E #6EF063

tetradic

#636EF0 #F063B5 #F0E563 #63F09F

square

#636EF0 #F063B5 #F0E563 #63F09F

split-complementary

#636EF0 #F09F63 #B5F063

monochromatic

#1321C6 #2B3AEB #636EF0 #9BA2F5 #D3D6FB

Accessibility & contrast

On white

4.18

#636EF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#636EF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EF0

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EF0	#FFFFFF	#000000	##000000
##636EF0	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F82F4

Deuteranopia (green-blind)

#0076ED

Tritanopia (blue-blind)

#008CA4

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636ef0;
/* rgb */ color: rgb(99, 110, 240);
/* oklch */ color: oklch(59.9% 0.193 275.3);

Tailwind

colors: {
  custom: {
    50: '#9b97f6',
    500: '#636ef0',
    950: '#000000',
  },
}

SCSS

$custom: #636ef0;
$custom-light: #9b97f6;
$custom-dark: #000000;

JSON

{
  "hex": "#636ef0",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 240
  },
  "hsl": {
    "h": 235.319,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.59888,
    "c": 0.19282,
    "h": 275.3
  },
  "luminance": 0.20096
}

Semantic roles & 50–950 ramp

primary

#636EF0

secondary

#EEEBC1

accent

#CE07DF

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636EF0

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

Preview Lab → · Contrast checker → · Palette generator →