#372FA3#372FA3

#372FA3 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.7% C 0.178 H 277.5°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#372FA3
RGB	rgb(55, 47, 163)
HSL	hsl(244, 55%, 41%)
HSV	hsv(244, 71%, 64%)
CMYK	cmyk(66.3%, 71.2%, 0%, 36.1%)
CIE-LAB	lab(28.08, 39.56, -61.28)
CIE-LCH	lch(28.08, 72.94, 302.85°)
OKLab	oklab(39.69% 0.0234 -0.1769)
OKLCH	oklch(39.69% 0.178 277.5)
XYZ	xyz(9.2008, 5.4888, 35.2178)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372FA3 #9BA32F

analogous

#2F61A3 #372FA3 #712FA3

triadic

#372FA3 #A3372F #2FA337

tetradic

#372FA3 #A32F61 #9BA32F #2FA371

square

#372FA3 #A32F61 #9BA32F #2FA371

split-complementary

#372FA3 #A3712F #61A32F

monochromatic

#171444 #272173 #372FA3 #4F46CA #7C75D7

Accessibility & contrast

On white

10.01

#372FA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#372FA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372FA3

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372FA3	#FFFFFF	#000000	##FFFFFF
##372FA3	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A6

Deuteranopia (green-blind)

#003DA1

Tritanopia (blue-blind)

#004F65

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372fa3;
/* rgb */ color: rgb(55, 47, 163);
/* oklch */ color: oklch(39.7% 0.178 277.5);

Tailwind

colors: {
  custom: {
    50: '#7c69bf',
    500: '#372fa3',
    950: '#000000',
  },
}

SCSS

$custom: #372fa3;
$custom-light: #7c69bf;
$custom-dark: #000000;

JSON

{
  "hex": "#372fa3",
  "rgb": {
    "r": 55,
    "g": 47,
    "b": 163
  },
  "hsl": {
    "h": 244.138,
    "s": 55.238,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39689,
    "c": 0.17846,
    "h": 277.5
  },
  "luminance": 0.0549
}

Semantic roles & 50–950 ramp

primary

#372FA3

secondary

#BABF6F

accent

#DF49D4

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372FA3

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

Preview Lab → · Contrast checker → · Palette generator →