#373D89#373D89

#373D89 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.125 H 275.8°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#373D89
RGB	rgb(55, 61, 137)
HSL	hsl(236, 43%, 38%)
HSV	hsv(236, 60%, 54%)
CMYK	cmyk(59.9%, 55.5%, 0%, 46.3%)
CIE-LAB	lab(29.30, 21.64, -43.38)
CIE-LCH	lch(29.30, 48.48, 296.51°)
OKLab	oklab(39.9% 0.0126 -0.1243)
OKLCH	oklch(39.9% 0.125 275.8)
XYZ	xyz(7.7582, 5.9553, 24.4027)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373D89 #898337

analogous

#376689 #373D89 #5A3789

triadic

#373D89 #89373D #3D8937

tetradic

#373D89 #893766 #898337 #37895A

square

#373D89 #893766 #898337 #37895A

split-complementary

#373D89 #895A37 #668937

monochromatic

#141632 #252A5D #373D89 #4950B5 #737AC7

Accessibility & contrast

On white

9.58

#373D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#373D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373D89

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373D89	#FFFFFF	#000000	##FFFFFF
##373D89	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C498C

Deuteranopia (green-blind)

#004287

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #373d89;
/* rgb */ color: rgb(55, 61, 137);
/* oklch */ color: oklch(39.9% 0.125 275.8);

Tailwind

colors: {
  custom: {
    50: '#7672ac',
    500: '#373d89',
    950: '#000000',
  },
}

SCSS

$custom: #373d89;
$custom-light: #7672ac;
$custom-dark: #000000;

JSON

{
  "hex": "#373d89",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 137
  },
  "hsl": {
    "h": 235.61,
    "s": 42.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39899,
    "c": 0.12493,
    "h": 275.8
  },
  "luminance": 0.05956
}

Semantic roles & 50–950 ramp

primary

#373D89

secondary

#B0AB6C

accent

#C955D2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #373D89

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

Preview Lab → · Contrast checker → · Palette generator →