#372DA9#372DA9

#372DA9 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 40.0% C 0.188 H 277.2°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX#372DA9
RGBrgb(55, 45, 169)
HSLhsl(245, 58%, 42%)
HSVhsv(245, 73%, 66%)
CMYKcmyk(67.5%, 73.4%, 0%, 33.7%)
CIE-LABlab(28.25, 42.69, -64.62)
CIE-LCHlch(28.25, 77.45, 303.45°)
OKLaboklab(39.99% 0.0237 -0.1867)
OKLCHoklch(39.99% 0.188 277.2)
XYZxyz(9.6730, 5.5527, 38.0905)
Luminance0.0555 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#372DA9 #9FA92D
analogous
#2D61A9 #372DA9 #752DA9
triadic
#372DA9 #A9372D #2DA937
tetradic
#372DA9 #A92D61 #9FA92D #2DA975
square
#372DA9 #A92D61 #9FA92D #2DA975
split-complementary
#372DA9 #A9752D #61A92D
monochromatic
#181348 #272079 #372DA9 #5146CE #7E76DA

Accessibility & contrast

On white

9.95
#372DA9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.11
#372DA9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372DA9
9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##372DA9#FFFFFF#000000##FFFFFF
##372DA91.009.952.119.95
#FFFFFF9.951.0021.001.00
#0000002.1121.001.0021.00
##FFFFFF9.951.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0048AD
Deuteranopia (green-blind)
#003DA7
Tritanopia (blue-blind)
#005068
Achromatopsia (no color)
#434343

Design tokens & code

CSS
--color: #372da9;
/* rgb */ color: rgb(55, 45, 169);
/* oklch */ color: oklch(40.0% 0.188 277.2);
Tailwind
colors: {
  custom: {
    50: '#7e68c4',
    500: '#372da9',
    950: '#000000',
  },
}
SCSS
$custom: #372da9;
$custom-light: #7e68c4;
$custom-dark: #000000;
JSON
{
  "hex": "#372da9",
  "rgb": {
    "r": 55,
    "g": 45,
    "b": 169
  },
  "hsl": {
    "h": 244.839,
    "s": 57.944,
    "l": 41.961
  },
  "oklch": {
    "l": 0.39988,
    "c": 0.18815,
    "h": 277.2
  },
  "luminance": 0.05554
}

Semantic roles & 50–950 ramp

primary
#372DA9
secondary
#BCC26F
accent
#E147D5
background
#F8F6FC
surface
#EFEBF8
border
#CAC6D1
text
#0B0613
muted
#7C7A82

Preview Lab

Preview with #372DA9

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

Preview Lab → · Contrast checker → · Palette generator →

#372DA9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva