#638BEC#638BEC

#638BEC is a light, vivid blue. Relative luminance 0.272; OKLCH L 65.3% C 0.152 H 265.5°. Best body text is #000000 at 6.43:1 contrast (WCAG AA passes).

Color values

HEX#638BEC
RGBrgb(99, 139, 236)
HSLhsl(222, 78%, 66%)
HSVhsv(222, 58%, 93%)
CMYKcmyk(58.1%, 41.1%, 0%, 7.5%)
CIE-LABlab(59.13, 14.73, -53.18)
CIE-LCHlch(59.13, 55.18, 285.48°)
OKLaboklab(65.27% -0.0118 -0.1512)
OKLCHoklch(65.27% 0.152 265.5)
XYZxyz(29.5134, 27.1716, 83.0300)
Luminance0.2717 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638BEC #ECC463
analogous
#63CFEC #638BEC #7F63EC
triadic
#638BEC #EC638B #8BEC63
tetradic
#638BEC #EC63CF #ECC463 #63EC7F
square
#638BEC #EC63CF #ECC463 #63EC7F
split-complementary
#638BEC #EC7F63 #CFEC63
monochromatic
#1748BE #2C62E5 #638BEC #9AB4F3 #D0DCF9

Accessibility & contrast

On white

3.26
#638BEC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.43
#638BEC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BEC
6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638BEC#FFFFFF#000000##000000
##638BEC1.003.266.436.43
#FFFFFF3.261.0021.0021.00
#0000006.4321.001.001.00
##0000006.4321.001.001.00

Color blindness preview

Protanopia (red-blind)
#6195F0
Deuteranopia (green-blind)
#4E89EA
Tritanopia (blue-blind)
#00A1B0
Achromatopsia (no color)
#8E8E8E

Design tokens & code

CSS
--color: #638bec;
/* rgb */ color: rgb(99, 139, 236);
/* oklch */ color: oklch(65.3% 0.152 265.5);
Tailwind
colors: {
  custom: {
    50: '#99acf2',
    500: '#638bec',
    950: '#000000',
  },
}
SCSS
$custom: #638bec;
$custom-light: #99acf2;
$custom-dark: #000000;
JSON
{
  "hex": "#638bec",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 236
  },
  "hsl": {
    "h": 222.482,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.65273,
    "c": 0.15169,
    "h": 265.5
  },
  "luminance": 0.27174
}

Semantic roles & 50–950 ramp

primary
#638BEC
secondary
#ECDFBF
accent
#9E0BDB
background
#FAFAFE
surface
#F3F4FD
border
#CDCED5
text
#0F1017
muted
#7F7F85

Preview Lab

Preview with #638BEC

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

Preview Lab → · Contrast checker → · Palette generator →

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