#372EA4#372EA4

#372EA4 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.6% C 0.181 H 277.6°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#372EA4
RGB	rgb(55, 46, 164)
HSL	hsl(245, 56%, 41%)
HSV	hsv(245, 72%, 64%)
CMYK	cmyk(66.5%, 72%, 0%, 35.7%)
CIE-LAB	lab(27.97, 40.48, -62.07)
CIE-LCH	lch(27.97, 74.11, 303.11°)
OKLab	oklab(39.64% 0.024 -0.1792)
OKLCH	oklch(39.64% 0.181 277.6)
XYZ	xyz(9.2512, 5.4458, 35.6784)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372EA4 #9BA42E

analogous

#2E60A4 #372EA4 #722EA4

triadic

#372EA4 #A4372E #2EA437

tetradic

#372EA4 #A42E60 #9BA42E #2EA472

square

#372EA4 #A42E60 #9BA42E #2EA472

split-complementary

#372EA4 #A4722E #60A42E

monochromatic

#171344 #272174 #372EA4 #4F45CB #7C74D8

Accessibility & contrast

On white

10.05

#372EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#372EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372EA4

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372EA4	#FFFFFF	#000000	##FFFFFF
##372EA4	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A8

Deuteranopia (green-blind)

#003DA2

Tritanopia (blue-blind)

#004F66

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ea4;
/* rgb */ color: rgb(55, 46, 164);
/* oklch */ color: oklch(39.6% 0.181 277.6);

Tailwind

colors: {
  custom: {
    50: '#7c68c0',
    500: '#372ea4',
    950: '#000000',
  },
}

SCSS

$custom: #372ea4;
$custom-light: #7c68c0;
$custom-dark: #000000;

JSON

{
  "hex": "#372ea4",
  "rgb": {
    "r": 55,
    "g": 46,
    "b": 164
  },
  "hsl": {
    "h": 244.576,
    "s": 56.19,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39635,
    "c": 0.18082,
    "h": 277.6
  },
  "luminance": 0.05447
}

Semantic roles & 50–950 ramp

primary

#372EA4

secondary

#BAC06E

accent

#DF48D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372EA4

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

Preview Lab → · Contrast checker → · Palette generator →