#373CB9#373CB9

#373CB9 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.192 H 273.5°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX#373CB9
RGBrgb(55, 60, 185)
HSLhsl(238, 54%, 47%)
HSVhsv(238, 70%, 73%)
CMYKcmyk(70.3%, 67.6%, 0%, 27.5%)
CIE-LABlab(33.02, 39.17, -66.33)
CIE-LCHlch(33.02, 77.03, 300.56°)
OKLaboklab(43.87% 0.0116 -0.1917)
OKLCHoklch(43.87% 0.192 273.5)
XYZxyz(11.9454, 7.5456, 46.7164)
Luminance0.0755 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#373CB9 #B9B437
analogous
#377DB9 #373CB9 #7337B9
triadic
#373CB9 #B9373C #3CB937
tetradic
#373CB9 #B9377D #B9B437 #37B973
square
#373CB9 #B9377D #B9B437 #37B973
split-complementary
#373CB9 #B97337 #7DB937
monochromatic
#1B1D5B #292D8A #373CB9 #5E62CF #8D90DD

Accessibility & contrast

On white

8.37
#373CB9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.51
#373CB9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB9
8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##373CB9#FFFFFF#000000##FFFFFF
##373CB91.008.372.518.37
#FFFFFF8.371.0021.001.00
#0000002.5121.001.0021.00
##FFFFFF8.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0054BD
Deuteranopia (green-blind)
#0048B7
Tritanopia (blue-blind)
#005D75
Achromatopsia (no color)
#4E4E4E

Design tokens & code

CSS
--color: #373cb9;
/* rgb */ color: rgb(55, 60, 185);
/* oklch */ color: oklch(43.9% 0.192 273.5);
Tailwind
colors: {
  custom: {
    50: '#8072cf',
    500: '#373cb9',
    950: '#000000',
  },
}
SCSS
$custom: #373cb9;
$custom-light: #8072cf;
$custom-dark: #000000;
JSON
{
  "hex": "#373cb9",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 185
  },
  "hsl": {
    "h": 237.692,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43871,
    "c": 0.19203,
    "h": 273.5
  },
  "luminance": 0.07547
}

Semantic roles & 50–950 ramp

primary
#373CB9
secondary
#C8C584
accent
#D84ADE
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0814
muted
#7D7B82

Preview Lab

Preview with #373CB9

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

Preview Lab → · Contrast checker → · Palette generator →

#373CB9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva