#638AF9#638AF9

#638AF9 is a light, vivid blue. Relative luminance 0.277; OKLCH L 65.9% C 0.170 H 267.1°. Best body text is #000000 at 6.53:1 contrast (WCAG AA passes).

Color values

HEX#638AF9
RGBrgb(99, 138, 249)
HSLhsl(224, 93%, 68%)
HSVhsv(224, 60%, 98%)
CMYKcmyk(60.2%, 44.6%, 0%, 2.4%)
CIE-LABlab(59.59, 19.58, -59.64)
CIE-LCHlch(59.59, 62.77, 288.17°)
OKLaboklab(65.85% -0.0086 -0.1702)
OKLCHoklch(65.85% 0.17 267.1)
XYZxyz(31.3271, 27.6665, 93.2935)
Luminance0.2767 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638AF9 #F9D263
analogous
#63D5F9 #638AF9 #8763F9
triadic
#638AF9 #F9638A #8AF963
tetradic
#638AF9 #F963D5 #F9D263 #63F987
square
#638AF9 #F963D5 #F9D263 #63F987
split-complementary
#638AF9 #F98763 #D5F963
monochromatic
#083FD9 #285EF7 #638AF9 #9EB6FB #D9E2FE

Accessibility & contrast

On white

3.21
#638AF9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.53
#638AF9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638AF9
6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638AF9#FFFFFF#000000##000000
##638AF91.003.216.536.53
#FFFFFF3.211.0021.0021.00
#0000006.5321.001.001.00
##0000006.5321.001.001.00

Color blindness preview

Protanopia (red-blind)
#5697FD
Deuteranopia (green-blind)
#3E89F7
Tritanopia (blue-blind)
#00A3B5
Achromatopsia (no color)
#8F8F8F

Design tokens & code

CSS
--color: #638af9;
/* rgb */ color: rgb(99, 138, 249);
/* oklch */ color: oklch(65.9% 0.170 267.1);
Tailwind
colors: {
  custom: {
    50: '#9babfc',
    500: '#638af9',
    950: '#000000',
  },
}
SCSS
$custom: #638af9;
$custom-light: #9babfc;
$custom-dark: #000000;
JSON
{
  "hex": "#638af9",
  "rgb": {
    "r": 99,
    "g": 138,
    "b": 249
  },
  "hsl": {
    "h": 224.4,
    "s": 92.593,
    "l": 68.235
  },
  "oklch": {
    "l": 0.65853,
    "c": 0.17042,
    "h": 267.1
  },
  "luminance": 0.27669
}

Semantic roles & 50–950 ramp

primary
#638AF9
secondary
#F3E7C5
accent
#AA00E6
background
#FAFAFF
surface
#F4F4FF
border
#CECED7
text
#0F1017
muted
#7F7F85

Preview Lab

Preview with #638AF9

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

Preview Lab → · Contrast checker → · Palette generator →

#638AF9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva