#373BB8#373BB8

#373BB8 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.192 H 273.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX#373BB8
RGBrgb(55, 59, 184)
HSLhsl(238, 54%, 47%)
HSVhsv(238, 70%, 72%)
CMYKcmyk(70.1%, 67.9%, 0%, 27.8%)
CIE-LABlab(32.70, 39.44, -66.26)
CIE-LCHlch(32.70, 77.11, 300.76°)
OKLaboklab(43.61% 0.0124 -0.1915)
OKLCHoklch(43.61% 0.192 273.7)
XYZxyz(11.7884, 7.3997, 46.1451)
Luminance0.0740 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#373BB8 #B8B437
analogous
#377BB8 #373BB8 #7437B8
triadic
#373BB8 #B8373B #3BB837
tetradic
#373BB8 #B8377B #B8B437 #37B874
square
#373BB8 #B8377B #B8B437 #37B874
split-complementary
#373BB8 #B87437 #7BB837
monochromatic
#1B1D5A #292C89 #373BB8 #5D61CF #8D8FDD

Accessibility & contrast

On white

8.47
#373BB8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.48
#373BB8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BB8
8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##373BB8#FFFFFF#000000##FFFFFF
##373BB81.008.472.488.47
#FFFFFF8.471.0021.001.00
#0000002.4821.001.0021.00
##FFFFFF8.471.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0053BC
Deuteranopia (green-blind)
#0047B6
Tritanopia (blue-blind)
#005D74
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #373bb8;
/* rgb */ color: rgb(55, 59, 184);
/* oklch */ color: oklch(43.6% 0.192 273.7);
Tailwind
colors: {
  custom: {
    50: '#8071ce',
    500: '#373bb8',
    950: '#000000',
  },
}
SCSS
$custom: #373bb8;
$custom-light: #8071ce;
$custom-dark: #000000;
JSON
{
  "hex": "#373bb8",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 184
  },
  "hsl": {
    "h": 238.14,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43613,
    "c": 0.19188,
    "h": 273.7
  },
  "luminance": 0.07401
}

Semantic roles & 50–950 ramp

primary
#373BB8
secondary
#C7C584
accent
#D94ADD
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0814
muted
#7D7B82

Preview Lab

Preview with #373BB8

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

Preview Lab → · Contrast checker → · Palette generator →

#373BB8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva