#37278B#37278B

#37278B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.1% C 0.157 H 282.5°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#37278B
RGB	rgb(55, 39, 139)
HSL	hsl(250, 56%, 35%)
HSV	hsv(250, 72%, 55%)
CMYK	cmyk(60.4%, 71.9%, 0%, 45.5%)
CIE-LAB	lab(24.09, 36.39, -53.11)
CIE-LCH	lch(24.09, 64.38, 304.42°)
OKLab	oklab(36.13% 0.0339 -0.153)
OKLCH	oklch(36.13% 0.157 282.5)
XYZ	xyz(6.9598, 4.1269, 24.8509)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37278B #7B8B27

analogous

#27498B #37278B #69278B

triadic

#37278B #8B3727 #278B37

tetradic

#37278B #8B2749 #7B8B27 #278B69

square

#37278B #8B2749 #7B8B27 #278B69

split-complementary

#37278B #8B6927 #498B27

monochromatic

#110C2B #241A5B #37278B #4A34BB #6E5BD1

Accessibility & contrast

On white

11.50

#37278B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#37278B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37278B

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37278B	#FFFFFF	#000000	##FFFFFF
##37278B	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#014256

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #37278b;
/* rgb */ color: rgb(55, 39, 139);
/* oklch */ color: oklch(36.1% 0.157 282.5);

Tailwind

colors: {
  custom: {
    50: '#7863ae',
    500: '#37278b',
    950: '#000000',
  },
}

SCSS

$custom: #37278b;
$custom-light: #7863ae;
$custom-dark: #000000;

JSON

{
  "hex": "#37278b",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 139
  },
  "hsl": {
    "h": 249.6,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.36131,
    "c": 0.1567,
    "h": 282.5
  },
  "luminance": 0.04127
}

Semantic roles & 50–950 ramp

primary

#37278B

secondary

#A7B658

accent

#DF48C7

background

#F7F5FA

surface

#EEEAF4

border

#C9C6CE

text

#0A0510

muted

#7C797F

Preview Lab

Preview with #37278B

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

Preview Lab → · Contrast checker → · Palette generator →