#372FAB#372FAB

#372FAB is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.5% C 0.189 H 276.7°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#372FAB
RGB	rgb(55, 47, 171)
HSL	hsl(244, 57%, 43%)
HSV	hsv(244, 73%, 67%)
CMYK	cmyk(67.8%, 72.5%, 0%, 32.9%)
CIE-LAB	lab(28.86, 42.20, -64.82)
CIE-LCH	lch(28.86, 77.35, 303.06°)
OKLab	oklab(40.48% 0.022 -0.1873)
OKLCH	oklch(40.48% 0.189 276.7)
XYZ	xyz(9.9404, 5.7847, 39.1129)
Luminance	0.0579 (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

#372FAB #A3AB2F

analogous

#2F65AB #372FAB #752FAB

triadic

#372FAB #AB372F #2FAB37

tetradic

#372FAB #AB2F65 #A3AB2F #2FAB75

square

#372FAB #AB2F65 #A3AB2F #2FAB75

split-complementary

#372FAB #AB752F #65AB2F

monochromatic

#18154B #28227B #372FAB #524ACD #807ADA

Accessibility & contrast

On white

9.73

#372FAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#372FAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372FAB

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372FAB	#FFFFFF	#000000	##FFFFFF
##372FAB	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AF

Deuteranopia (green-blind)

#003FA9

Tritanopia (blue-blind)

#00526A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #372fab;
/* rgb */ color: rgb(55, 47, 171);
/* oklch */ color: oklch(40.5% 0.189 276.7);

Tailwind

colors: {
  custom: {
    50: '#7e69c5',
    500: '#372fab',
    950: '#000000',
  },
}

SCSS

$custom: #372fab;
$custom-light: #7e69c5;
$custom-dark: #000000;

JSON

{
  "hex": "#372fab",
  "rgb": {
    "r": 55,
    "g": 47,
    "b": 171
  },
  "hsl": {
    "h": 243.871,
    "s": 56.881,
    "l": 42.745
  },
  "oklch": {
    "l": 0.4048,
    "c": 0.18855,
    "h": 276.7
  },
  "luminance": 0.05786
}

Semantic roles & 50–950 ramp

primary

#372FAB

secondary

#BEC373

accent

#E048D6

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #372FAB

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

Preview Lab → · Contrast checker → · Palette generator →