#373C8D#373C8D

#373C8D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.132 H 276.0°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#373C8D
RGB	rgb(55, 60, 141)
HSL	hsl(237, 44%, 38%)
HSV	hsv(237, 61%, 55%)
CMYK	cmyk(61%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(29.33, 23.72, -45.81)
CIE-LCH	lch(29.33, 51.59, 297.38°)
OKLab	oklab(40.01% 0.0138 -0.1314)
OKLCH	oklch(40.01% 0.132 276)
XYZ	xyz(7.9976, 5.9664, 25.9243)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373C8D #8D8837

analogous

#37678D #373C8D #5D378D

triadic

#373C8D #8D373C #3C8D37

tetradic

#373C8D #8D3767 #8D8837 #378D5D

square

#373C8D #8D3767 #8D8837 #378D5D

split-complementary

#373C8D #8D5D37 #678D37

monochromatic

#151735 #262961 #373C8D #4950B8 #757AC9

Accessibility & contrast

On white

9.57

#373C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#373C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373C8D

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373C8D	#FFFFFF	#000000	##FFFFFF
##373C8D	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #373c8d;
/* rgb */ color: rgb(55, 60, 141);
/* oklch */ color: oklch(40.0% 0.132 276.0);

Tailwind

colors: {
  custom: {
    50: '#7771af',
    500: '#373c8d',
    950: '#000000',
  },
}

SCSS

$custom: #373c8d;
$custom-light: #7771af;
$custom-dark: #000000;

JSON

{
  "hex": "#373c8d",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 236.512,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40014,
    "c": 0.13217,
    "h": 276
  },
  "luminance": 0.05967
}

Semantic roles & 50–950 ramp

primary

#373C8D

secondary

#B2AE6E

accent

#CC54D4

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #373C8D

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

Preview Lab → · Contrast checker → · Palette generator →