#372CA5#372CA5

#372CA5 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.4% C 0.184 H 277.8°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#372CA5
RGB	rgb(55, 44, 165)
HSL	hsl(245, 58%, 41%)
HSV	hsv(245, 73%, 65%)
CMYK	cmyk(66.7%, 73.3%, 0%, 35.3%)
CIE-LAB	lab(27.65, 41.96, -63.20)
CIE-LCH	lch(27.65, 75.86, 303.58°)
OKLab	oklab(39.44% 0.0251 -0.1825)
OKLCH	oklch(39.44% 0.184 277.8)
XYZ	xyz(9.2656, 5.3294, 36.1304)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372CA5 #9AA52C

analogous

#2C5DA5 #372CA5 #732CA5

triadic

#372CA5 #A5372C #2CA537

tetradic

#372CA5 #A52C5D #9AA52C #2CA573

square

#372CA5 #A52C5D #9AA52C #2CA573

split-complementary

#372CA5 #A5732C #5DA52C

monochromatic

#171244 #271F75 #372CA5 #4E42CD #7B72D9

Accessibility & contrast

On white

10.16

#372CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#372CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372CA5

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372CA5	#FFFFFF	#000000	##FFFFFF
##372CA5	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A9

Deuteranopia (green-blind)

#003CA3

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #372ca5;
/* rgb */ color: rgb(55, 44, 165);
/* oklch */ color: oklch(39.4% 0.184 277.8);

Tailwind

colors: {
  custom: {
    50: '#7d67c1',
    500: '#372ca5',
    950: '#000000',
  },
}

SCSS

$custom: #372ca5;
$custom-light: #7d67c1;
$custom-dark: #000000;

JSON

{
  "hex": "#372ca5",
  "rgb": {
    "r": 55,
    "g": 44,
    "b": 165
  },
  "hsl": {
    "h": 245.455,
    "s": 57.895,
    "l": 40.98
  },
  "oklch": {
    "l": 0.3944,
    "c": 0.18422,
    "h": 277.8
  },
  "luminance": 0.0533
}

Semantic roles & 50–950 ramp

primary

#372CA5

secondary

#B9C16C

accent

#E147D3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372CA5

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

Preview Lab → · Contrast checker → · Palette generator →