#373AB3#373AB3

#373AB3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.187 H 274.2°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX#373AB3
RGBrgb(55, 58, 179)
HSLhsl(239, 53%, 46%)
HSVhsv(239, 69%, 70%)
CMYKcmyk(69.3%, 67.6%, 0%, 29.8%)
CIE-LABlab(32.02, 38.33, -64.42)
CIE-LCHlch(32.02, 74.96, 300.75°)
OKLaboklab(42.98% 0.0136 -0.1861)
OKLCHoklch(42.98% 0.187 274.2)
XYZxyz(11.2226, 7.0920, 43.4165)
Luminance0.0709 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#373AB3 #B3B037
analogous
#3778B3 #373AB3 #7237B3
triadic
#373AB3 #B3373A #3AB337
tetradic
#373AB3 #B33778 #B3B037 #37B372
square
#373AB3 #B33778 #B3B037 #37B372
split-complementary
#373AB3 #B37237 #78B337
monochromatic
#1A1C55 #292B84 #373AB3 #5B5DCD #8A8BDB

Accessibility & contrast

On white

8.68
#373AB3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.42
#373AB3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AB3
8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##373AB3#FFFFFF#000000##FFFFFF
##373AB31.008.682.428.68
#FFFFFF8.681.0021.001.00
#0000002.4221.001.0021.00
##FFFFFF8.681.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0051B7
Deuteranopia (green-blind)
#0046B1
Tritanopia (blue-blind)
#005A71
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #373ab3;
/* rgb */ color: rgb(55, 58, 179);
/* oklch */ color: oklch(43.0% 0.187 274.2);
Tailwind
colors: {
  custom: {
    50: '#7f71cb',
    500: '#373ab3',
    950: '#000000',
  },
}
SCSS
$custom: #373ab3;
$custom-light: #7f71cb;
$custom-dark: #000000;
JSON
{
  "hex": "#373ab3",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 179
  },
  "hsl": {
    "h": 238.548,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42977,
    "c": 0.1866,
    "h": 274.2
  },
  "luminance": 0.07093
}

Semantic roles & 50–950 ramp

primary
#373AB3
secondary
#C5C381
accent
#D94BDC
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #373AB3

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

Preview Lab → · Contrast checker → · Palette generator →

#373AB3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva