#372CA4#372CA4

#372CA4 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.3% C 0.183 H 277.9°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#372CA4
RGB	rgb(55, 44, 164)
HSL	hsl(246, 58%, 41%)
HSV	hsv(246, 73%, 64%)
CMYK	cmyk(66.5%, 73.2%, 0%, 35.7%)
CIE-LAB	lab(27.55, 41.63, -62.76)
CIE-LCH	lch(27.55, 75.31, 303.56°)
OKLab	oklab(39.34% 0.0253 -0.1812)
OKLCH	oklch(39.34% 0.183 277.9)
XYZ	xyz(9.1749, 5.2932, 35.6529)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372CA4 #99A42C

analogous

#2C5DA4 #372CA4 #732CA4

triadic

#372CA4 #A4372C #2CA437

tetradic

#372CA4 #A42C5D #99A42C #2CA473

square

#372CA4 #A42C5D #99A42C #2CA473

split-complementary

#372CA4 #A4732C #5DA42C

monochromatic

#171243 #271F74 #372CA4 #4E41CC #7B71D9

Accessibility & contrast

On white

10.20

#372CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#372CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372CA4

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372CA4	#FFFFFF	#000000	##FFFFFF
##372CA4	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A8

Deuteranopia (green-blind)

#003CA2

Tritanopia (blue-blind)

#004E65

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #372ca4;
/* rgb */ color: rgb(55, 44, 164);
/* oklch */ color: oklch(39.3% 0.183 277.9);

Tailwind

colors: {
  custom: {
    50: '#7d67c0',
    500: '#372ca4',
    950: '#000000',
  },
}

SCSS

$custom: #372ca4;
$custom-light: #7d67c0;
$custom-dark: #000000;

JSON

{
  "hex": "#372ca4",
  "rgb": {
    "r": 55,
    "g": 44,
    "b": 164
  },
  "hsl": {
    "h": 245.5,
    "s": 57.692,
    "l": 40.784
  },
  "oklch": {
    "l": 0.3934,
    "c": 0.18297,
    "h": 277.9
  },
  "luminance": 0.05294
}

Semantic roles & 50–950 ramp

primary

#372CA4

secondary

#B9C06B

accent

#E147D3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372CA4

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

Preview Lab → · Contrast checker → · Palette generator →