#372DA5#372DA5

#372DA5 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.6% C 0.183 H 277.7°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#372DA5
RGB	rgb(55, 45, 165)
HSL	hsl(245, 57%, 41%)
HSV	hsv(245, 73%, 65%)
CMYK	cmyk(66.7%, 72.7%, 0%, 35.3%)
CIE-LAB	lab(27.86, 41.38, -62.86)
CIE-LCH	lch(27.86, 75.26, 303.36°)
OKLab	oklab(39.59% 0.0245 -0.1815)
OKLCH	oklch(39.59% 0.183 277.7)
XYZ	xyz(9.3033, 5.4048, 36.1430)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372DA5 #9BA52D

analogous

#2D5FA5 #372DA5 #732DA5

triadic

#372DA5 #A5372D #2DA537

tetradic

#372DA5 #A52D5F #9BA52D #2DA573

square

#372DA5 #A52D5F #9BA52D #2DA573

split-complementary

#372DA5 #A5732D #5FA52D

monochromatic

#171345 #272075 #372DA5 #4F43CC #7C73D9

Accessibility & contrast

On white

10.09

#372DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#372DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372DA5

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372DA5	#FFFFFF	#000000	##FFFFFF
##372DA5	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A9

Deuteranopia (green-blind)

#003DA3

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372da5;
/* rgb */ color: rgb(55, 45, 165);
/* oklch */ color: oklch(39.6% 0.183 277.7);

Tailwind

colors: {
  custom: {
    50: '#7d68c1',
    500: '#372da5',
    950: '#000000',
  },
}

SCSS

$custom: #372da5;
$custom-light: #7d68c1;
$custom-dark: #000000;

JSON

{
  "hex": "#372da5",
  "rgb": {
    "r": 55,
    "g": 45,
    "b": 165
  },
  "hsl": {
    "h": 245,
    "s": 57.143,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39586,
    "c": 0.18316,
    "h": 277.7
  },
  "luminance": 0.05406
}

Semantic roles & 50–950 ramp

primary

#372DA5

secondary

#BAC16D

accent

#E047D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372DA5

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

Preview Lab → · Contrast checker → · Palette generator →