#372AA1#372AA1

#372AA1 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.8% C 0.181 H 278.6°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#372AA1
RGB	rgb(55, 42, 161)
HSL	hsl(247, 59%, 40%)
HSV	hsv(247, 74%, 63%)
CMYK	cmyk(65.8%, 73.9%, 0%, 36.9%)
CIE-LAB	lab(26.85, 41.79, -62.10)
CIE-LCH	lch(26.85, 74.85, 303.94°)
OKLab	oklab(38.75% 0.0272 -0.1793)
OKLCH	oklch(38.75% 0.181 278.6)
XYZ	xyz(8.8345, 5.0406, 34.2187)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372AA1 #94A12A

analogous

#2A58A1 #372AA1 #732AA1

triadic

#372AA1 #A1372A #2AA137

tetradic

#372AA1 #A12A58 #94A12A #2AA173

square

#372AA1 #A12A58 #94A12A #2AA173

split-complementary

#372AA1 #A1732A #58A12A

monochromatic

#161140 #261D70 #372AA1 #4C3CCC #786DD9

Accessibility & contrast

On white

10.46

#372AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#372AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372AA1

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372AA1	#FFFFFF	#000000	##FFFFFF
##372AA1	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A4

Deuteranopia (green-blind)

#003B9F

Tritanopia (blue-blind)

#004B63

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #372aa1;
/* rgb */ color: rgb(55, 42, 161);
/* oklch */ color: oklch(38.8% 0.181 278.6);

Tailwind

colors: {
  custom: {
    50: '#7c66be',
    500: '#372aa1',
    950: '#000000',
  },
}

SCSS

$custom: #372aa1;
$custom-light: #7c66be;
$custom-dark: #000000;

JSON

{
  "hex": "#372aa1",
  "rgb": {
    "r": 55,
    "g": 42,
    "b": 161
  },
  "hsl": {
    "h": 246.555,
    "s": 58.621,
    "l": 39.804
  },
  "oklch": {
    "l": 0.3875,
    "c": 0.18134,
    "h": 278.6
  },
  "luminance": 0.05041
}

Semantic roles & 50–950 ramp

primary

#372AA1

secondary

#B6C067

accent

#E246D1

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372AA1

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

Preview Lab → · Contrast checker → · Palette generator →