#636AF8#636AF8

#636AF8 is a mid, highly saturated blue. Relative luminance 0.197; OKLCH L 59.8% C 0.208 H 276.0°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX#636AF8
RGBrgb(99, 106, 248)
HSLhsl(237, 91%, 68%)
HSVhsv(237, 60%, 97%)
CMYKcmyk(60.1%, 57.3%, 0%, 2.7%)
CIE-LABlab(51.54, 38.54, -72.06)
CIE-LCHlch(51.54, 81.72, 298.14°)
OKLaboklab(59.76% 0.0216 -0.2071)
OKLCHoklch(59.76% 0.208 276)
XYZxyz(27.2374, 19.7359, 91.1628)
Luminance0.1974 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#636AF8 #F8F163
analogous
#63B5F8 #636AF8 #A663F8
triadic
#636AF8 #F8636A #6AF863
tetradic
#636AF8 #F863B5 #F8F163 #63F8A6
square
#636AF8 #F863B5 #F8F163 #63F8A6
split-complementary
#636AF8 #F8A663 #B5F863
monochromatic
#0A13D7 #2832F5 #636AF8 #9EA2FB #D8DAFD

Accessibility & contrast

On white

4.24
#636AF8 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.95
#636AF8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AF8
4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##636AF8#FFFFFF#000000##000000
##636AF81.004.244.954.95
#FFFFFF4.241.0021.0021.00
#0000004.9521.001.001.00
##0000004.9521.001.001.00

Color blindness preview

Protanopia (red-blind)
#0081FD
Deuteranopia (green-blind)
#0075F5
Tritanopia (blue-blind)
#008CA7
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #636af8;
/* rgb */ color: rgb(99, 106, 248);
/* oklch */ color: oklch(59.8% 0.208 276.0);
Tailwind
colors: {
  custom: {
    50: '#9d94fb',
    500: '#636af8',
    950: '#000000',
  },
}
SCSS
$custom: #636af8;
$custom-light: #9d94fb;
$custom-dark: #000000;
JSON
{
  "hex": "#636af8",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 248
  },
  "hsl": {
    "h": 237.181,
    "s": 91.411,
    "l": 68.039
  },
  "oklch": {
    "l": 0.59761,
    "c": 0.20821,
    "h": 276
  },
  "luminance": 0.19738
}

Semantic roles & 50–950 ramp

primary
#636AF8
secondary
#F2F0C5
accent
#DB00E6
background
#FAF9FF
surface
#F4F1FF
border
#CECBD7
text
#100D18
muted
#7F7E86

Preview Lab

Preview with #636AF8

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

Preview Lab → · Contrast checker → · Palette generator →

#636AF8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva