#373CB7#373CB7

#373CB7 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.189 H 273.6°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX#373CB7
RGBrgb(55, 60, 183)
HSLhsl(238, 54%, 47%)
HSVhsv(238, 70%, 72%)
CMYKcmyk(69.9%, 67.2%, 0%, 28.2%)
CIE-LABlab(32.84, 38.48, -65.45)
CIE-LCHlch(32.84, 75.92, 300.45°)
OKLaboklab(43.68% 0.0118 -0.1891)
OKLCHoklch(43.68% 0.189 273.6)
XYZxyz(11.7358, 7.4617, 45.6123)
Luminance0.0746 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#373CB7 #B7B237
analogous
#377CB7 #373CB7 #7237B7
triadic
#373CB7 #B7373C #3CB737
tetradic
#373CB7 #B7377C #B7B237 #37B772
square
#373CB7 #B7377C #B7B237 #37B772
split-complementary
#373CB7 #B77237 #7CB737
monochromatic
#1B1D59 #292D88 #373CB7 #5D61CE #8C8FDC

Accessibility & contrast

On white

8.42
#373CB7 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.49
#373CB7 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB7
8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##373CB7#FFFFFF#000000##FFFFFF
##373CB71.008.422.498.42
#FFFFFF8.421.0021.001.00
#0000002.4921.001.0021.00
##FFFFFF8.421.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0053BB
Deuteranopia (green-blind)
#0047B5
Tritanopia (blue-blind)
#005D74
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #373cb7;
/* rgb */ color: rgb(55, 60, 183);
/* oklch */ color: oklch(43.7% 0.189 273.6);
Tailwind
colors: {
  custom: {
    50: '#7f72ce',
    500: '#373cb7',
    950: '#000000',
  },
}
SCSS
$custom: #373cb7;
$custom-light: #7f72ce;
$custom-dark: #000000;
JSON
{
  "hex": "#373cb7",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 183
  },
  "hsl": {
    "h": 237.656,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43683,
    "c": 0.18947,
    "h": 273.6
  },
  "luminance": 0.07463
}

Semantic roles & 50–950 ramp

primary
#373CB7
secondary
#C7C483
accent
#D74BDD
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0814
muted
#7D7B82

Preview Lab

Preview with #373CB7

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

Preview Lab → · Contrast checker → · Palette generator →

#373CB7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva