#372EA9#372EA9

#372EA9 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 40.1% C 0.187 H 277.1°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#372EA9
RGB	rgb(55, 46, 169)
HSL	hsl(244, 57%, 42%)
HSV	hsv(244, 73%, 66%)
CMYK	cmyk(67.5%, 72.8%, 0%, 33.7%)
CIE-LAB	lab(28.46, 42.12, -64.29)
CIE-LCH	lch(28.46, 76.85, 303.23°)
OKLab	oklab(40.13% 0.023 -0.1857)
OKLCH	oklch(40.13% 0.187 277.1)
XYZ	xyz(9.7116, 5.6299, 38.1033)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372EA9 #A0A92E

analogous

#2E63A9 #372EA9 #742EA9

triadic

#372EA9 #A9372E #2EA937

tetradic

#372EA9 #A92E63 #A0A92E #2EA974

square

#372EA9 #A92E63 #A0A92E #2EA974

split-complementary

#372EA9 #A9742E #63A92E

monochromatic

#181449 #272179 #372EA9 #5147CD #7F77DA

Accessibility & contrast

On white

9.88

#372EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#372EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372EA9

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372EA9	#FFFFFF	#000000	##FFFFFF
##372EA9	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AD

Deuteranopia (green-blind)

#003EA7

Tritanopia (blue-blind)

#005068

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #372ea9;
/* rgb */ color: rgb(55, 46, 169);
/* oklch */ color: oklch(40.1% 0.187 277.1);

Tailwind

colors: {
  custom: {
    50: '#7e68c4',
    500: '#372ea9',
    950: '#000000',
  },
}

SCSS

$custom: #372ea9;
$custom-light: #7e68c4;
$custom-dark: #000000;

JSON

{
  "hex": "#372ea9",
  "rgb": {
    "r": 55,
    "g": 46,
    "b": 169
  },
  "hsl": {
    "h": 244.39,
    "s": 57.209,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40133,
    "c": 0.18711,
    "h": 277.1
  },
  "luminance": 0.05631
}

Semantic roles & 50–950 ramp

primary

#372EA9

secondary

#BCC271

accent

#E047D5

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #372EA9

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

Preview Lab → · Contrast checker → · Palette generator →