#3639CB#3639CB

#3639CB is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.1% C 0.218 H 272.6°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX#3639CB
RGBrgb(54, 57, 203)
HSLhsl(239, 59%, 50%)
HSVhsv(239, 73%, 80%)
CMYKcmyk(73.4%, 71.9%, 0%, 20.4%)
CIE-LABlab(34.03, 46.91, -75.23)
CIE-LCHlch(34.03, 88.66, 301.95°)
OKLaboklab(45.1% 0.0098 -0.2177)
OKLCHoklch(45.1% 0.218 272.6)
XYZxyz(13.7603, 8.0209, 57.3113)
Luminance0.0802 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3639CB #CBC836
analogous
#3683CB #3639CB #7D36CB
triadic
#3639CB #CB3639 #39CB36
tetradic
#3639CB #CB3683 #CBC836 #36CB7D
square
#3639CB #CB3683 #CBC836 #36CB7D
split-complementary
#3639CB #CB7D36 #83CB36
monochromatic
#1C1D6B #282B9C #3639CB #6769D8 #9799E4

Accessibility & contrast

On white

8.06
#3639CB on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.60
#3639CB on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639CB
8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3639CB#FFFFFF#000000##FFFFFF
##3639CB1.008.062.608.06
#FFFFFF8.061.0021.001.00
#0000002.6021.001.0021.00
##FFFFFF8.061.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0057CF
Deuteranopia (green-blind)
#0049C8
Tritanopia (blue-blind)
#00627E
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3639cb;
/* rgb */ color: rgb(54, 57, 203);
/* oklch */ color: oklch(45.1% 0.218 272.6);
Tailwind
colors: {
  custom: {
    50: '#8471dc',
    500: '#3639cb',
    950: '#000000',
  },
}
SCSS
$custom: #3639cb;
$custom-light: #8471dc;
$custom-dark: #000000;
JSON
{
  "hex": "#3639cb",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 203
  },
  "hsl": {
    "h": 238.792,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.451,
    "c": 0.2179,
    "h": 272.6
  },
  "luminance": 0.08022
}

Semantic roles & 50–950 ramp

primary
#3639CB
secondary
#D0CE8D
accent
#DF46E2
background
#F8F6FD
surface
#F0ECFB
border
#CBC7D4
text
#0D0815
muted
#7D7B83

Preview Lab

Preview with #3639CB

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

Preview Lab → · Contrast checker → · Palette generator →

#3639CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva