#638CD5#638CD5

#638CD5 is a light, moderate blue. Relative luminance 0.262; OKLCH L 64.2% C 0.119 H 261.3°. Best body text is #000000 at 6.24:1 contrast (WCAG AA passes).

Color values

HEX#638CD5
RGBrgb(99, 140, 213)
HSLhsl(218, 58%, 61%)
HSVhsv(218, 54%, 84%)
CMYKcmyk(53.5%, 34.3%, 0%, 16.5%)
CIE-LABlab(58.24, 6.78, -41.78)
CIE-LCHlch(58.24, 42.32, 279.22°)
OKLaboklab(64.2% -0.018 -0.1179)
OKLCHoklch(64.2% 0.119 261.3)
XYZxyz(26.5298, 26.2109, 66.5991)
Luminance0.2621 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638CD5 #D5AC63
analogous
#63C5D5 #638CD5 #7363D5
triadic
#638CD5 #D5638C #8CD563
tetradic
#638CD5 #D563C5 #D5AC63 #63D573
square
#638CD5 #D563C5 #D5AC63 #63D573
split-complementary
#638CD5 #D57363 #C5D563
monochromatic
#284F95 #3569C6 #638CD5 #93B0E2 #C3D3EF

Accessibility & contrast

On white

3.36
#638CD5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.24
#638CD5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638CD5
6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638CD5#FFFFFF#000000##000000
##638CD51.003.366.246.24
#FFFFFF3.361.0021.0021.00
#0000006.2421.001.001.00
##0000006.2421.001.001.00

Color blindness preview

Protanopia (red-blind)
#6F92D8
Deuteranopia (green-blind)
#6187D3
Tritanopia (blue-blind)
#249CA7
Achromatopsia (no color)
#8C8C8C

Design tokens & code

CSS
--color: #638cd5;
/* rgb */ color: rgb(99, 140, 213);
/* oklch */ color: oklch(64.2% 0.119 261.3);
Tailwind
colors: {
  custom: {
    50: '#96ade2',
    500: '#638cd5',
    950: '#000000',
  },
}
SCSS
$custom: #638cd5;
$custom-light: #96ade2;
$custom-dark: #000000;
JSON
{
  "hex": "#638cd5",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 213
  },
  "hsl": {
    "h": 218.421,
    "s": 57.576,
    "l": 61.176
  },
  "oklch": {
    "l": 0.64198,
    "c": 0.11926,
    "h": 261.3
  },
  "luminance": 0.26213
}

Semantic roles & 50–950 ramp

primary
#638CD5
secondary
#DFD0B4
accent
#8A20C5
background
#F9FAFD
surface
#F2F4FB
border
#CCCED4
text
#0E1015
muted
#7E7F83

Preview Lab

Preview with #638CD5

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

Preview Lab → · Contrast checker → · Palette generator →

#638CD5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva