#37289D#37289D

#37289D is a dark, vivid blue. Relative luminance 0.048; OKLCH L 38.1% C 0.178 H 279.5°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#37289D
RGB	rgb(55, 40, 157)
HSL	hsl(248, 59%, 39%)
HSV	hsv(248, 75%, 62%)
CMYK	cmyk(65%, 74.5%, 0%, 38.4%)
CIE-LAB	lab(26.05, 41.63, -60.98)
CIE-LCH	lch(26.05, 73.83, 304.32°)
OKLab	oklab(38.06% 0.0294 -0.176)
OKLCH	oklch(38.06% 0.178 279.5)
XYZ	xyz(8.4182, 4.7635, 32.3676)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37289D #8E9D28

analogous

#28539D #37289D #71289D

triadic

#37289D #9D3728 #289D37

tetradic

#37289D #9D2853 #8E9D28 #289D71

square

#37289D #9D2853 #8E9D28 #289D71

split-complementary

#37289D #9D7128 #539D28

monochromatic

#150F3B #261C6C #37289D #4936CC #7667D8

Accessibility & contrast

On white

10.75

#37289D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#37289D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37289D

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37289D	#FFFFFF	#000000	##FFFFFF
##37289D	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A0

Deuteranopia (green-blind)

#00399B

Tritanopia (blue-blind)

#004960

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #37289d;
/* rgb */ color: rgb(55, 40, 157);
/* oklch */ color: oklch(38.1% 0.178 279.5);

Tailwind

colors: {
  custom: {
    50: '#7c64bb',
    500: '#37289d',
    950: '#000000',
  },
}

SCSS

$custom: #37289d;
$custom-light: #7c64bb;
$custom-dark: #000000;

JSON

{
  "hex": "#37289d",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 157
  },
  "hsl": {
    "h": 247.692,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.38062,
    "c": 0.17844,
    "h": 279.5
  },
  "luminance": 0.04764
}

Semantic roles & 50–950 ramp

primary

#37289D

secondary

#B3BE62

accent

#E345CE

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #37289D

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

Preview Lab → · Contrast checker → · Palette generator →