#636BEE#636BEE

#636BEE is a mid, vivid blue. Relative luminance 0.193; OKLCH L 59.2% C 0.194 H 276.1°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX#636BEE
RGBrgb(99, 107, 238)
HSLhsl(237, 80%, 66%)
HSVhsv(237, 58%, 93%)
CMYKcmyk(58.4%, 55%, 0%, 6.7%)
CIE-LABlab(51.08, 34.72, -67.22)
CIE-LCHlch(51.08, 75.66, 297.32°)
OKLaboklab(59.2% 0.0206 -0.1928)
OKLCHoklch(59.2% 0.194 276.1)
XYZxyz(25.8309, 19.3392, 83.2440)
Luminance0.1934 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#636BEE #EEE663
analogous
#63B0EE #636BEE #A063EE
triadic
#636BEE #EE636B #6BEE63
tetradic
#636BEE #EE63B0 #EEE663 #63EEA0
square
#636BEE #EE63B0 #EEE663 #63EEA0
split-complementary
#636BEE #EEA063 #B0EE63
monochromatic
#151FC2 #2C37E8 #636BEE #9A9FF4 #D1D4FA

Accessibility & contrast

On white

4.31
#636BEE on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.87
#636BEE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636BEE
4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##636BEE#FFFFFF#000000##000000
##636BEE1.004.314.874.87
#FFFFFF4.311.0021.0021.00
#0000004.8721.001.001.00
##0000004.8721.001.001.00

Color blindness preview

Protanopia (red-blind)
#0080F2
Deuteranopia (green-blind)
#0074EB
Tritanopia (blue-blind)
#008AA2
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #636bee;
/* rgb */ color: rgb(99, 107, 238);
/* oklch */ color: oklch(59.2% 0.194 276.1);
Tailwind
colors: {
  custom: {
    50: '#9b95f4',
    500: '#636bee',
    950: '#000000',
  },
}
SCSS
$custom: #636bee;
$custom-light: #9b95f4;
$custom-dark: #000000;
JSON
{
  "hex": "#636bee",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 238
  },
  "hsl": {
    "h": 236.547,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.59202,
    "c": 0.19394,
    "h": 276.1
  },
  "luminance": 0.19341
}

Semantic roles & 50–950 ramp

primary
#636BEE
secondary
#EDEBC0
accent
#D009DD
background
#FAF9FF
surface
#F4F1FE
border
#CECBD6
text
#0F0D17
muted
#7F7E85

Preview Lab

Preview with #636BEE

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

Preview Lab → · Contrast checker → · Palette generator →

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