#3639B2#3639B2

#3639B2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.187 H 274.1°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX#3639B2
RGBrgb(54, 57, 178)
HSLhsl(239, 53%, 45%)
HSVhsv(239, 70%, 70%)
CMYKcmyk(69.7%, 68%, 0%, 30.2%)
CIE-LABlab(31.63, 38.48, -64.46)
CIE-LCHlch(31.63, 75.07, 300.84°)
OKLaboklab(42.66% 0.0132 -0.1862)
OKLCHoklch(42.66% 0.187 274.1)
XYZxyz(11.0177, 6.9238, 42.8667)
Luminance0.0693 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3639B2 #B2AF36
analogous
#3677B2 #3639B2 #7136B2
triadic
#3639B2 #B23639 #39B236
tetradic
#3639B2 #B23677 #B2AF36 #36B271
square
#3639B2 #B23677 #B2AF36 #36B271
split-complementary
#3639B2 #B27136 #77B236
monochromatic
#1A1B54 #282A83 #3639B2 #595BCD #888ADB

Accessibility & contrast

On white

8.81
#3639B2 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.39
#3639B2 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3639B2
8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3639B2#FFFFFF#000000##FFFFFF
##3639B21.008.812.398.81
#FFFFFF8.811.0021.001.00
#0000002.3921.001.0021.00
##FFFFFF8.811.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0050B6
Deuteranopia (green-blind)
#0045B0
Tritanopia (blue-blind)
#005971
Achromatopsia (no color)
#4A4A4A

Design tokens & code

CSS
--color: #3639b2;
/* rgb */ color: rgb(54, 57, 178);
/* oklch */ color: oklch(42.7% 0.187 274.1);
Tailwind
colors: {
  custom: {
    50: '#7e70ca',
    500: '#3639b2',
    950: '#000000',
  },
}
SCSS
$custom: #3639b2;
$custom-light: #7e70ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3639b2",
  "rgb": {
    "r": 54,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 238.548,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42655,
    "c": 0.1867,
    "h": 274.1
  },
  "luminance": 0.06925
}

Semantic roles & 50–950 ramp

primary
#3639B2
secondary
#C5C37F
accent
#D94BDD
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #3639B2

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

Preview Lab → · Contrast checker → · Palette generator →

#3639B2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva