#37439D#37439D

#37439D is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.7% C 0.146 H 272.9°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#37439D
RGB	rgb(55, 67, 157)
HSL	hsl(233, 48%, 42%)
HSV	hsv(233, 65%, 62%)
CMYK	cmyk(65%, 57.3%, 0%, 38.4%)
CIE-LAB	lab(32.39, 24.80, -50.61)
CIE-LCH	lch(32.39, 56.37, 296.11°)
OKLab	oklab(42.68% 0.0073 -0.1455)
OKLCH	oklch(42.68% 0.146 272.9)
XYZ	xyz(9.6665, 7.2600, 32.7837)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37439D #9D9137

analogous

#37769D #37439D #5E379D

triadic

#37439D #9D3743 #439D37

tetradic

#37439D #9D3776 #9D9137 #379D5E

square

#37439D #9D3776 #9D9137 #379D5E

split-complementary

#37439D #9D5E37 #769D37

monochromatic

#171C42 #273070 #37439D #505DC2 #7D87D1

Accessibility & contrast

On white

8.56

#37439D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#37439D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37439D

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37439D	#FFFFFF	#000000	##FFFFFF
##37439D	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A0

Deuteranopia (green-blind)

#00489B

Tritanopia (blue-blind)

#005969

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #37439d;
/* rgb */ color: rgb(55, 67, 157);
/* oklch */ color: oklch(42.7% 0.146 272.9);

Tailwind

colors: {
  custom: {
    50: '#7977bb',
    500: '#37439d',
    950: '#000000',
  },
}

SCSS

$custom: #37439d;
$custom-light: #7977bb;
$custom-dark: #000000;

JSON

{
  "hex": "#37439d",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 157
  },
  "hsl": {
    "h": 232.941,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42683,
    "c": 0.14569,
    "h": 272.9
  },
  "luminance": 0.07261
}

Semantic roles & 50–950 ramp

primary

#37439D

secondary

#BBB275

accent

#C850D8

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #37439D

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

Preview Lab → · Contrast checker → · Palette generator →