#372EA1#372EA1

#372EA1 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.3% C 0.177 H 278.0°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#372EA1
RGB	rgb(55, 46, 161)
HSL	hsl(245, 56%, 41%)
HSV	hsv(245, 71%, 63%)
CMYK	cmyk(65.8%, 71.4%, 0%, 36.9%)
CIE-LAB	lab(27.68, 39.49, -60.73)
CIE-LCH	lch(27.68, 72.44, 303.03°)
OKLab	oklab(39.34% 0.0245 -0.1753)
OKLCH	oklch(39.34% 0.177 278)
XYZ	xyz(8.9835, 5.3387, 34.2684)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372EA1 #98A12E

analogous

#2E5EA1 #372EA1 #712EA1

triadic

#372EA1 #A1372E #2EA137

tetradic

#372EA1 #A12E5E #98A12E #2EA171

square

#372EA1 #A12E5E #98A12E #2EA171

split-complementary

#372EA1 #A1712E #5EA12E

monochromatic

#161342 #272071 #372EA1 #4D43C9 #7A73D7

Accessibility & contrast

On white

10.16

#372EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#372EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372EA1

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372EA1	#FFFFFF	#000000	##FFFFFF
##372EA1	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)

#0046A4

Deuteranopia (green-blind)

#003D9F

Tritanopia (blue-blind)

#004D64

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #372ea1;
/* rgb */ color: rgb(55, 46, 161);
/* oklch */ color: oklch(39.3% 0.177 278.0);

Tailwind

colors: {
  custom: {
    50: '#7c68be',
    500: '#372ea1',
    950: '#000000',
  },
}

SCSS

$custom: #372ea1;
$custom-light: #7c68be;
$custom-dark: #000000;

JSON

{
  "hex": "#372ea1",
  "rgb": {
    "r": 55,
    "g": 46,
    "b": 161
  },
  "hsl": {
    "h": 244.696,
    "s": 55.556,
    "l": 40.588
  },
  "oklch": {
    "l": 0.3934,
    "c": 0.17701,
    "h": 278
  },
  "luminance": 0.05339
}

Semantic roles & 50–950 ramp

primary

#372EA1

secondary

#B8BE6C

accent

#DF49D3

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372EA1

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

Preview Lab → · Contrast checker → · Palette generator →