#638DF9#638DF9

#638DF9 is a light, vivid blue. Relative luminance 0.285; OKLCH L 66.5% C 0.167 H 266.0°. Best body text is #000000 at 6.71:1 contrast (WCAG AA passes).

Color values

HEX#638DF9
RGBrgb(99, 141, 249)
HSLhsl(223, 93%, 68%)
HSVhsv(223, 60%, 98%)
CMYKcmyk(60.2%, 43.4%, 0%, 2.4%)
CIE-LABlab(60.37, 17.78, -58.38)
CIE-LCHlch(60.37, 61.03, 286.94°)
OKLaboklab(66.46% -0.0116 -0.1665)
OKLCHoklch(66.46% 0.167 266)
XYZxyz(31.7635, 28.5392, 93.4389)
Luminance0.2854 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638DF9 #F9CF63
analogous
#63D8F9 #638DF9 #8463F9
triadic
#638DF9 #F9638D #8DF963
tetradic
#638DF9 #F963D8 #F9CF63 #63F984
square
#638DF9 #F963D8 #F9CF63 #63F984
split-complementary
#638DF9 #F98463 #D8F963
monochromatic
#0843D9 #2862F7 #638DF9 #9EB8FB #D9E3FE

Accessibility & contrast

On white

3.13
#638DF9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.71
#638DF9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DF9
6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638DF9#FFFFFF#000000##000000
##638DF91.003.136.716.71
#FFFFFF3.131.0021.0021.00
#0000006.7121.001.001.00
##0000006.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#5B99FD
Deuteranopia (green-blind)
#458BF7
Tritanopia (blue-blind)
#00A5B7
Achromatopsia (no color)
#929292

Design tokens & code

CSS
--color: #638df9;
/* rgb */ color: rgb(99, 141, 249);
/* oklch */ color: oklch(66.5% 0.167 266.0);
Tailwind
colors: {
  custom: {
    50: '#9badfc',
    500: '#638df9',
    950: '#000000',
  },
}
SCSS
$custom: #638df9;
$custom-light: #9badfc;
$custom-dark: #000000;
JSON
{
  "hex": "#638df9",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 249
  },
  "hsl": {
    "h": 223.2,
    "s": 92.593,
    "l": 68.235
  },
  "oklch": {
    "l": 0.66456,
    "c": 0.16687,
    "h": 266
  },
  "luminance": 0.28542
}

Semantic roles & 50–950 ramp

primary
#638DF9
secondary
#F3E6C5
accent
#A500E6
background
#FAFAFF
surface
#F4F4FF
border
#CECED7
text
#0F1017
muted
#7F7F85

Preview Lab

Preview with #638DF9

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

Preview Lab → · Contrast checker → · Palette generator →

#638DF9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva