#638EDD#638EDD

#638EDD is a light, vivid blue. Relative luminance 0.272; OKLCH L 65.1% C 0.128 H 261.8°. Best body text is #000000 at 6.44:1 contrast (WCAG AA passes).

Color values

HEX#638EDD
RGBrgb(99, 142, 221)
HSLhsl(219, 64%, 63%)
HSVhsv(219, 55%, 87%)
CMYKcmyk(55.2%, 35.7%, 0%, 13.3%)
CIE-LABlab(59.17, 8.13, -44.77)
CIE-LCHlch(59.17, 45.51, 280.29°)
OKLaboklab(65.05% -0.0183 -0.1266)
OKLCHoklch(65.05% 0.128 261.8)
XYZxyz(27.8653, 27.2169, 72.1776)
Luminance0.2722 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638EDD #DDB263
analogous
#63CBDD #638EDD #7563DD
triadic
#638EDD #DD638E #8EDD63
tetradic
#638EDD #DD63CB #DDB263 #63DD75
square
#638EDD #DD63CB #DDB263 #63DD75
split-complementary
#638EDD #DD7563 #CBDD63
monochromatic
#2350A2 #316AD2 #638EDD #95B2E8 #C7D7F3

Accessibility & contrast

On white

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

On black

6.44
#638EDD on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EDD
6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638EDD#FFFFFF#000000##000000
##638EDD1.003.266.446.44
#FFFFFF3.261.0021.0021.00
#0000006.4421.001.001.00
##0000006.4421.001.001.00

Color blindness preview

Protanopia (red-blind)
#6E95E0
Deuteranopia (green-blind)
#5F89DB
Tritanopia (blue-blind)
#139FAB
Achromatopsia (no color)
#8E8E8E

Design tokens & code

CSS
--color: #638edd;
/* rgb */ color: rgb(99, 142, 221);
/* oklch */ color: oklch(65.1% 0.128 261.8);
Tailwind
colors: {
  custom: {
    50: '#97aee8',
    500: '#638edd',
    950: '#000000',
  },
}
SCSS
$custom: #638edd;
$custom-light: #97aee8;
$custom-dark: #000000;
JSON
{
  "hex": "#638edd",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 221
  },
  "hsl": {
    "h": 218.852,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.65054,
    "c": 0.12792,
    "h": 261.8
  },
  "luminance": 0.27219
}

Semantic roles & 50–950 ramp

primary
#638EDD
secondary
#E4D4B8
accent
#8D19CC
background
#F9FAFE
surface
#F2F4FC
border
#CCCED5
text
#0E1016
muted
#7E7F84

Preview Lab

Preview with #638EDD

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

Preview Lab → · Contrast checker → · Palette generator →

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