#372DA1#372DA1

#372DA1 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.2% C 0.178 H 278.1°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#372DA1
RGB	rgb(55, 45, 161)
HSL	hsl(245, 56%, 40%)
HSV	hsv(245, 72%, 63%)
CMYK	cmyk(65.8%, 72%, 0%, 36.9%)
CIE-LAB	lab(27.47, 40.07, -61.08)
CIE-LCH	lch(27.47, 73.05, 303.27°)
OKLab	oklab(39.19% 0.0252 -0.1763)
OKLCH	oklch(39.19% 0.178 278.1)
XYZ	xyz(8.9449, 5.2615, 34.2555)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372DA1 #97A12D

analogous

#2D5DA1 #372DA1 #712DA1

triadic

#372DA1 #A1372D #2DA137

tetradic

#372DA1 #A12D5D #97A12D #2DA171

square

#372DA1 #A12D5D #97A12D #2DA171

split-complementary

#372DA1 #A1712D #5DA12D

monochromatic

#161241 #272071 #372DA1 #4D41CA #7A71D7

Accessibility & contrast

On white

10.23

#372DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#372DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372DA1

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372DA1	#FFFFFF	#000000	##FFFFFF
##372DA1	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A4

Deuteranopia (green-blind)

#003C9F

Tritanopia (blue-blind)

#004D64

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #372da1;
/* rgb */ color: rgb(55, 45, 161);
/* oklch */ color: oklch(39.2% 0.178 278.1);

Tailwind

colors: {
  custom: {
    50: '#7c67be',
    500: '#372da1',
    950: '#000000',
  },
}

SCSS

$custom: #372da1;
$custom-light: #7c67be;
$custom-dark: #000000;

JSON

{
  "hex": "#372da1",
  "rgb": {
    "r": 55,
    "g": 45,
    "b": 161
  },
  "hsl": {
    "h": 245.172,
    "s": 56.311,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39189,
    "c": 0.17812,
    "h": 278.1
  },
  "luminance": 0.05262
}

Semantic roles & 50–950 ramp

primary

#372DA1

secondary

#B8BF6B

accent

#E048D3

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372DA1

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

Preview Lab → · Contrast checker → · Palette generator →