#37279D#37279D

#37279D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.9% C 0.179 H 279.7°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#37279D
RGB	rgb(55, 39, 157)
HSL	hsl(248, 60%, 38%)
HSV	hsv(248, 75%, 62%)
CMYK	cmyk(65%, 75.2%, 0%, 38.4%)
CIE-LAB	lab(25.85, 42.18, -61.30)
CIE-LCH	lch(25.85, 74.41, 304.53°)
OKLab	oklab(37.92% 0.0301 -0.1769)
OKLCH	oklch(37.92% 0.179 279.7)
XYZ	xyz(8.3849, 4.6969, 32.3565)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37279D #8D9D27

analogous

#27529D #37279D #72279D

triadic

#37279D #9D3727 #279D37

tetradic

#37279D #9D2752 #8D9D27 #279D72

square

#37279D #9D2752 #8D9D27 #279D72

split-complementary

#37279D #9D7227 #529D27

monochromatic

#150F3B #261B6C #37279D #4935CD #7566D9

Accessibility & contrast

On white

10.83

#37279D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#37279D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37279D

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37279D	#FFFFFF	#000000	##FFFFFF
##37279D	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A0

Deuteranopia (green-blind)

#00399B

Tritanopia (blue-blind)

#004860

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #37279d;
/* rgb */ color: rgb(55, 39, 157);
/* oklch */ color: oklch(37.9% 0.179 279.7);

Tailwind

colors: {
  custom: {
    50: '#7c64bb',
    500: '#37279d',
    950: '#000000',
  },
}

SCSS

$custom: #37279d;
$custom-light: #7c64bb;
$custom-dark: #000000;

JSON

{
  "hex": "#37279d",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 157
  },
  "hsl": {
    "h": 248.136,
    "s": 60.204,
    "l": 38.431
  },
  "oklch": {
    "l": 0.37923,
    "c": 0.17948,
    "h": 279.7
  },
  "luminance": 0.04698
}

Semantic roles & 50–950 ramp

primary

#37279D

secondary

#B2BF61

accent

#E344CE

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #37279D

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

Preview Lab → · Contrast checker → · Palette generator →