#372EA3#372EA3

#372EA3 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.5% C 0.180 H 277.7°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#372EA3
RGB	rgb(55, 46, 163)
HSL	hsl(245, 56%, 41%)
HSV	hsv(245, 72%, 64%)
CMYK	cmyk(66.3%, 71.8%, 0%, 36.1%)
CIE-LAB	lab(27.87, 40.15, -61.63)
CIE-LCH	lch(27.87, 73.55, 303.08°)
OKLab	oklab(39.54% 0.0241 -0.1779)
OKLCH	oklch(39.54% 0.18 277.7)
XYZ	xyz(9.1613, 5.4098, 35.2046)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372EA3 #9AA32E

analogous

#2E5FA3 #372EA3 #712EA3

triadic

#372EA3 #A3372E #2EA337

tetradic

#372EA3 #A32E5F #9AA32E #2EA371

square

#372EA3 #A32E5F #9AA32E #2EA371

split-complementary

#372EA3 #A3712E #5FA32E

monochromatic

#171344 #272173 #372EA3 #4E44CA #7B74D8

Accessibility & contrast

On white

10.09

#372EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#372EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372EA3

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372EA3	#FFFFFF	#000000	##FFFFFF
##372EA3	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A6

Deuteranopia (green-blind)

#003DA1

Tritanopia (blue-blind)

#004E65

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ea3;
/* rgb */ color: rgb(55, 46, 163);
/* oklch */ color: oklch(39.5% 0.180 277.7);

Tailwind

colors: {
  custom: {
    50: '#7c68bf',
    500: '#372ea3',
    950: '#000000',
  },
}

SCSS

$custom: #372ea3;
$custom-light: #7c68bf;
$custom-dark: #000000;

JSON

{
  "hex": "#372ea3",
  "rgb": {
    "r": 55,
    "g": 46,
    "b": 163
  },
  "hsl": {
    "h": 244.615,
    "s": 55.981,
    "l": 40.98
  },
  "oklch": {
    "l": 0.39537,
    "c": 0.17956,
    "h": 277.7
  },
  "luminance": 0.05411
}

Semantic roles & 50–950 ramp

primary

#372EA3

secondary

#B9BF6D

accent

#DF49D4

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372EA3

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

Preview Lab → · Contrast checker → · Palette generator →