#373CB5#373CB5

#373CB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.5% C 0.187 H 273.7°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#373CB5
RGB	rgb(55, 60, 181)
HSL	hsl(238, 53%, 46%)
HSV	hsv(238, 70%, 71%)
CMYK	cmyk(69.6%, 66.9%, 0%, 29%)
CIE-LAB	lab(32.65, 37.79, -64.56)
CIE-LCH	lch(32.65, 74.81, 300.34°)
OKLab	oklab(43.5% 0.012 -0.1865)
OKLCH	oklch(43.5% 0.187 273.7)
XYZ	xyz(11.5291, 7.3790, 44.5238)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373CB5 #B5B037

analogous

#377BB5 #373CB5 #7137B5

triadic

#373CB5 #B5373C #3CB537

tetradic

#373CB5 #B5377B #B5B037 #37B571

square

#373CB5 #B5377B #B5B037 #37B571

split-complementary

#373CB5 #B57137 #7BB537

monochromatic

#1A1D57 #292C86 #373CB5 #5C60CD #8B8EDC

Accessibility & contrast

On white

8.48

#373CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#373CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB5

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CB5	#FFFFFF	#000000	##FFFFFF
##373CB5	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B9

Deuteranopia (green-blind)

#0047B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373cb5;
/* rgb */ color: rgb(55, 60, 181);
/* oklch */ color: oklch(43.5% 0.187 273.7);

Tailwind

colors: {
  custom: {
    50: '#7f72cc',
    500: '#373cb5',
    950: '#000000',
  },
}

SCSS

$custom: #373cb5;
$custom-light: #7f72cc;
$custom-dark: #000000;

JSON

{
  "hex": "#373cb5",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 181
  },
  "hsl": {
    "h": 237.619,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43496,
    "c": 0.18689,
    "h": 273.7
  },
  "luminance": 0.0738
}

Semantic roles & 50–950 ramp

primary

#373CB5

secondary

#C6C382

accent

#D74BDD

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373CB5

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

Preview Lab → · Contrast checker → · Palette generator →