#372FA1#372FA1

#372FA1 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.5% C 0.176 H 277.8°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#372FA1
RGB	rgb(55, 47, 161)
HSL	hsl(244, 55%, 41%)
HSV	hsv(244, 71%, 63%)
CMYK	cmyk(65.8%, 70.8%, 0%, 36.9%)
CIE-LAB	lab(27.89, 38.90, -60.38)
CIE-LCH	lch(27.89, 71.83, 302.79°)
OKLab	oklab(39.49% 0.0238 -0.1743)
OKLCH	oklch(39.49% 0.176 277.8)
XYZ	xyz(9.0230, 5.4177, 34.2815)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372FA1 #99A12F

analogous

#2F60A1 #372FA1 #702FA1

triadic

#372FA1 #A1372F #2FA137

tetradic

#372FA1 #A12F60 #99A12F #2FA170

square

#372FA1 #A12F60 #99A12F #2FA170

split-complementary

#372FA1 #A1702F #60A12F

monochromatic

#171342 #272172 #372FA1 #4E45C9 #7B74D6

Accessibility & contrast

On white

10.08

#372FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#372FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372FA1

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372FA1	#FFFFFF	#000000	##FFFFFF
##372FA1	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A4

Deuteranopia (green-blind)

#003D9F

Tritanopia (blue-blind)

#004E64

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372fa1;
/* rgb */ color: rgb(55, 47, 161);
/* oklch */ color: oklch(39.5% 0.176 277.8);

Tailwind

colors: {
  custom: {
    50: '#7c69be',
    500: '#372fa1',
    950: '#000000',
  },
}

SCSS

$custom: #372fa1;
$custom-light: #7c69be;
$custom-dark: #000000;

JSON

{
  "hex": "#372fa1",
  "rgb": {
    "r": 55,
    "g": 47,
    "b": 161
  },
  "hsl": {
    "h": 244.211,
    "s": 54.808,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39494,
    "c": 0.17589,
    "h": 277.8
  },
  "luminance": 0.05418
}

Semantic roles & 50–950 ramp

primary

#372FA1

secondary

#B9BE6E

accent

#DE4AD4

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372FA1

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

Preview Lab → · Contrast checker → · Palette generator →