#3639B9#3639B9

#3639B9 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.196 H 273.6°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX#3639B9
RGBrgb(54, 57, 185)
HSLhsl(239, 55%, 47%)
HSVhsv(239, 71%, 73%)
CMYKcmyk(70.8%, 69.2%, 0%, 27.5%)
CIE-LABlab(32.29, 40.87, -67.54)
CIE-LCHlch(32.29, 78.94, 301.18°)
OKLaboklab(43.33% 0.0124 -0.1952)
OKLCHoklch(43.33% 0.196 273.6)
XYZxyz(11.7385, 7.2122, 46.6630)
Luminance0.0721 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3639B9 #B9B636
analogous
#367BB9 #3639B9 #7536B9
triadic
#3639B9 #B93639 #39B936
tetradic
#3639B9 #B9367B #B9B636 #36B975
square
#3639B9 #B9367B #B9B636 #36B975
split-complementary
#3639B9 #B97536 #7BB936
monochromatic
#1A1C5A #282A8A #3639B9 #5D5FD0 #8C8EDD

Accessibility & contrast

On white

8.60
#3639B9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.44
#3639B9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639B9
8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3639B9#FFFFFF#000000##FFFFFF
##3639B91.008.602.448.60
#FFFFFF8.601.0021.001.00
#0000002.4421.001.0021.00
##FFFFFF8.601.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0052BD
Deuteranopia (green-blind)
#0046B7
Tritanopia (blue-blind)
#005C74
Achromatopsia (no color)
#4C4C4C

Design tokens & code

CSS
--color: #3639b9;
/* rgb */ color: rgb(54, 57, 185);
/* oklch */ color: oklch(43.3% 0.196 273.6);
Tailwind
colors: {
  custom: {
    50: '#8070cf',
    500: '#3639b9',
    950: '#000000',
  },
}
SCSS
$custom: #3639b9;
$custom-light: #8070cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3639b9",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 185
  },
  "hsl": {
    "h": 238.626,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43325,
    "c": 0.19563,
    "h": 273.6
  },
  "luminance": 0.07213
}

Semantic roles & 50–950 ramp

primary
#3639B9
secondary
#C8C683
accent
#DB4ADE
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0714
muted
#7D7A82

Preview Lab

Preview with #3639B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3639B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva