#372CA6#372CA6

#372CA6 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.5% C 0.185 H 277.7°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#372CA6
RGB	rgb(55, 44, 166)
HSL	hsl(245, 58%, 41%)
HSV	hsv(245, 73%, 65%)
CMYK	cmyk(66.9%, 73.5%, 0%, 34.9%)
CIE-LAB	lab(27.75, 42.28, -63.64)
CIE-LCH	lch(27.75, 76.40, 303.60°)
OKLab	oklab(39.54% 0.0249 -0.1838)
OKLCH	oklch(39.54% 0.185 277.7)
XYZ	xyz(9.3569, 5.3660, 36.6116)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372CA6 #9BA62C

analogous

#2C5EA6 #372CA6 #742CA6

triadic

#372CA6 #A6372C #2CA637

tetradic

#372CA6 #A62C5E #9BA62C #2CA674

square

#372CA6 #A62C5E #9BA62C #2CA674

split-complementary

#372CA6 #A6742C #5EA62C

monochromatic

#171245 #271F76 #372CA6 #4F42CD #7C73DA

Accessibility & contrast

On white

10.13

#372CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#372CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372CA6

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372CA6	#FFFFFF	#000000	##FFFFFF
##372CA6	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046AA

Deuteranopia (green-blind)

#003CA4

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ca6;
/* rgb */ color: rgb(55, 44, 166);
/* oklch */ color: oklch(39.5% 0.185 277.7);

Tailwind

colors: {
  custom: {
    50: '#7d67c2',
    500: '#372ca6',
    950: '#000000',
  },
}

SCSS

$custom: #372ca6;
$custom-light: #7d67c2;
$custom-dark: #000000;

JSON

{
  "hex": "#372ca6",
  "rgb": {
    "r": 55,
    "g": 44,
    "b": 166
  },
  "hsl": {
    "h": 245.41,
    "s": 58.095,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39541,
    "c": 0.18547,
    "h": 277.7
  },
  "luminance": 0.05367
}

Semantic roles & 50–950 ramp

primary

#372CA6

secondary

#BAC16D

accent

#E146D3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372CA6

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

Preview Lab → · Contrast checker → · Palette generator →