#373DA1#373DA1

#373DA1 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.159 H 274.6°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX#373DA1
RGBrgb(55, 61, 161)
HSLhsl(237, 49%, 42%)
HSVhsv(237, 66%, 63%)
CMYKcmyk(65.8%, 62.1%, 0%, 36.9%)
CIE-LABlab(31.17, 30.16, -55.03)
CIE-LCHlch(31.17, 62.75, 298.73°)
OKLaboklab(41.87% 0.0127 -0.1585)
OKLCHoklch(41.87% 0.159 274.6)
XYZxyz(9.6752, 6.7221, 34.4989)
Luminance0.0672 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#373DA1 #A19B37
analogous
#3772A1 #373DA1 #6637A1
triadic
#373DA1 #A1373D #3DA137
tetradic
#373DA1 #A13772 #A19B37 #37A166
square
#373DA1 #A13772 #A19B37 #37A166
split-complementary
#373DA1 #A16637 #72A137
monochromatic
#181A46 #272C73 #373DA1 #5158C4 #7F84D3

Accessibility & contrast

On white

8.96
#373DA1 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.34
#373DA1 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DA1
8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##373DA1#FFFFFF#000000##FFFFFF
##373DA11.008.962.348.96
#FFFFFF8.961.0021.001.00
#0000002.3421.001.0021.00
##FFFFFF8.961.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004EA4
Deuteranopia (green-blind)
#00459F
Tritanopia (blue-blind)
#005669
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #373da1;
/* rgb */ color: rgb(55, 61, 161);
/* oklch */ color: oklch(41.9% 0.159 274.6);
Tailwind
colors: {
  custom: {
    50: '#7b72be',
    500: '#373da1',
    950: '#000000',
  },
}
SCSS
$custom: #373da1;
$custom-light: #7b72be;
$custom-dark: #000000;
JSON
{
  "hex": "#373da1",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 236.604,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.41873,
    "c": 0.15905,
    "h": 274.6
  },
  "luminance": 0.06723
}

Semantic roles & 50–950 ramp

primary
#373DA1
secondary
#BDB977
accent
#D14FD9
background
#F8F6FB
surface
#EFECF7
border
#CAC7D0
text
#0A0812
muted
#7C7B81

Preview Lab

Preview with #373DA1

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

Preview Lab → · Contrast checker → · Palette generator →

#373DA1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva