#373FB7#373FB7

#373FB7 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.2% C 0.186 H 273.0°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX#373FB7
RGBrgb(55, 63, 183)
HSLhsl(236, 54%, 47%)
HSVhsv(236, 70%, 72%)
CMYKcmyk(69.9%, 65.6%, 0%, 28.2%)
CIE-LABlab(33.53, 36.62, -64.31)
CIE-LCHlch(33.53, 74.00, 299.66°)
OKLaboklab(44.19% 0.0098 -0.1857)
OKLCHoklch(44.19% 0.186 273)
XYZxyz(11.8974, 7.7850, 45.6662)
Luminance0.0779 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#373FB7 #B7AF37
analogous
#377FB7 #373FB7 #6F37B7
triadic
#373FB7 #B7373F #3FB737
tetradic
#373FB7 #B7377F #B7AF37 #37B76F
square
#373FB7 #B7377F #B7AF37 #37B76F
split-complementary
#373FB7 #B76F37 #7FB737
monochromatic
#1B1F59 #292F88 #373FB7 #5D64CE #8C91DC

Accessibility & contrast

On white

8.21
#373FB7 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.56
#373FB7 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FB7
8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##373FB7#FFFFFF#000000##FFFFFF
##373FB71.008.212.568.21
#FFFFFF8.211.0021.001.00
#0000002.5621.001.0021.00
##FFFFFF8.211.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0055BB
Deuteranopia (green-blind)
#0049B5
Tritanopia (blue-blind)
#005E75
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #373fb7;
/* rgb */ color: rgb(55, 63, 183);
/* oklch */ color: oklch(44.2% 0.186 273.0);
Tailwind
colors: {
  custom: {
    50: '#7f74ce',
    500: '#373fb7',
    950: '#000000',
  },
}
SCSS
$custom: #373fb7;
$custom-light: #7f74ce;
$custom-dark: #000000;
JSON
{
  "hex": "#373fb7",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 236.25,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44189,
    "c": 0.18601,
    "h": 273
  },
  "luminance": 0.07786
}

Semantic roles & 50–950 ramp

primary
#373FB7
secondary
#C7C383
accent
#D44BDD
background
#F8F7FC
surface
#F0EDF9
border
#CBC8D2
text
#0B0814
muted
#7C7B82

Preview Lab

Preview with #373FB7

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

Preview Lab → · Contrast checker → · Palette generator →

#373FB7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva