#372F8B#372F8B

#372F8B is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.4% C 0.147 H 280.5°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#372F8B
RGB	rgb(55, 47, 139)
HSL	hsl(245, 49%, 36%)
HSV	hsv(245, 66%, 55%)
CMYK	cmyk(60.4%, 66.2%, 0%, 45.5%)
CIE-LAB	lab(25.89, 31.50, -50.16)
CIE-LCH	lch(25.89, 59.23, 302.13°)
OKLab	oklab(37.43% 0.0268 -0.1443)
OKLCH	oklch(37.43% 0.147 280.5)
XYZ	xyz(7.2508, 4.7088, 24.9479)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372F8B #838B2F

analogous

#2F558B #372F8B #652F8B

triadic

#372F8B #8B372F #2F8B37

tetradic

#372F8B #8B2F55 #838B2F #2F8B65

square

#372F8B #8B2F55 #838B2F #2F8B65

split-complementary

#372F8B #8B652F #558B2F

monochromatic

#131030 #25205D #372F8B #493EB9 #7168CC

Accessibility & contrast

On white

10.81

#372F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#372F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372F8B

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372F8B	#FFFFFF	#000000	##FFFFFF
##372F8B	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #372f8b;
/* rgb */ color: rgb(55, 47, 139);
/* oklch */ color: oklch(37.4% 0.147 280.5);

Tailwind

colors: {
  custom: {
    50: '#7768ae',
    500: '#372f8b',
    950: '#000000',
  },
}

SCSS

$custom: #372f8b;
$custom-light: #7768ae;
$custom-dark: #000000;

JSON

{
  "hex": "#372f8b",
  "rgb": {
    "r": 55,
    "g": 47,
    "b": 139
  },
  "hsl": {
    "h": 245.217,
    "s": 49.462,
    "l": 36.471
  },
  "oklch": {
    "l": 0.37431,
    "c": 0.14679,
    "h": 280.5
  },
  "luminance": 0.04709
}

Semantic roles & 50–950 ramp

primary

#372F8B

secondary

#ACB363

accent

#D94FCD

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0610

muted

#7C7A7F

Preview Lab

Preview with #372F8B

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

Preview Lab → · Contrast checker → · Palette generator →