#37288B#37288B

#37288B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.3% C 0.156 H 282.3°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#37288B
RGB	rgb(55, 40, 139)
HSL	hsl(249, 55%, 35%)
HSV	hsv(249, 71%, 55%)
CMYK	cmyk(60.4%, 71.2%, 0%, 45.5%)
CIE-LAB	lab(24.30, 35.80, -52.76)
CIE-LCH	lch(24.30, 63.76, 304.16°)
OKLab	oklab(36.29% 0.0331 -0.1519)
OKLCH	oklch(36.29% 0.156 282.3)
XYZ	xyz(6.9931, 4.1934, 24.8620)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37288B #7C8B28

analogous

#284A8B #37288B #68288B

triadic

#37288B #8B3728 #288B37

tetradic

#37288B #8B284A #7C8B28 #288B68

square

#37288B #8B284A #7C8B28 #288B68

split-complementary

#37288B #8B6828 #4A8B28

monochromatic

#110D2C #241A5B #37288B #4A36BB #6E5DD0

Accessibility & contrast

On white

11.42

#37288B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#37288B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37288B

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37288B	#FFFFFF	#000000	##FFFFFF
##37288B	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#014256

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #37288b;
/* rgb */ color: rgb(55, 40, 139);
/* oklch */ color: oklch(36.3% 0.156 282.3);

Tailwind

colors: {
  custom: {
    50: '#7863ae',
    500: '#37288b',
    950: '#000000',
  },
}

SCSS

$custom: #37288b;
$custom-light: #7863ae;
$custom-dark: #000000;

JSON

{
  "hex": "#37288b",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 139
  },
  "hsl": {
    "h": 249.091,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.36285,
    "c": 0.15551,
    "h": 282.3
  },
  "luminance": 0.04194
}

Semantic roles & 50–950 ramp

primary

#37288B

secondary

#A8B659

accent

#DF49C8

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0510

muted

#7C7A7F

Preview Lab

Preview with #37288B

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

Preview Lab → · Contrast checker → · Palette generator →