#636EF8#636EF8

#636EF8 is a mid, highly saturated blue. Relative luminance 0.206; OKLCH L 60.5% C 0.203 H 275.1°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX#636EF8
RGBrgb(99, 110, 248)
HSLhsl(236, 91%, 68%)
HSVhsv(236, 60%, 97%)
CMYKcmyk(60.1%, 55.6%, 0%, 2.7%)
CIE-LABlab(52.49, 36.14, -70.52)
CIE-LCHlch(52.49, 79.24, 297.13°)
OKLaboklab(60.47% 0.018 -0.2025)
OKLCHoklch(60.47% 0.203 275.1)
XYZxyz(27.6593, 20.5796, 91.3034)
Luminance0.2058 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#636EF8 #F8ED63
analogous
#63B9F8 #636EF8 #A263F8
triadic
#636EF8 #F8636E #6EF863
tetradic
#636EF8 #F863B9 #F8ED63 #63F8A2
square
#636EF8 #F863B9 #F8ED63 #63F8A2
split-complementary
#636EF8 #F8A263 #B9F863
monochromatic
#0A19D7 #2838F5 #636EF8 #9EA4FB #D8DBFD

Accessibility & contrast

On white

4.10
#636EF8 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.12
#636EF8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EF8
5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##636EF8#FFFFFF#000000##000000
##636EF81.004.105.125.12
#FFFFFF4.101.0021.0021.00
#0000005.1221.001.001.00
##0000005.1221.001.001.00

Color blindness preview

Protanopia (red-blind)
#0084FD
Deuteranopia (green-blind)
#0077F5
Tritanopia (blue-blind)
#008FA8
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #636ef8;
/* rgb */ color: rgb(99, 110, 248);
/* oklch */ color: oklch(60.5% 0.203 275.1);
Tailwind
colors: {
  custom: {
    50: '#9c97fb',
    500: '#636ef8',
    950: '#000000',
  },
}
SCSS
$custom: #636ef8;
$custom-light: #9c97fb;
$custom-dark: #000000;
JSON
{
  "hex": "#636ef8",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 248
  },
  "hsl": {
    "h": 235.57,
    "s": 91.411,
    "l": 68.039
  },
  "oklch": {
    "l": 0.60466,
    "c": 0.20331,
    "h": 275.1
  },
  "luminance": 0.20582
}

Semantic roles & 50–950 ramp

primary
#636EF8
secondary
#F2EFC5
accent
#D500E6
background
#FAF9FF
surface
#F4F2FF
border
#CECCD7
text
#0F0D18
muted
#7F7E86

Preview Lab

Preview with #636EF8

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

Preview Lab → · Contrast checker → · Palette generator →

#636EF8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva