#372EA5#372EA5

#372EA5 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.7% C 0.182 H 277.5°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#372EA5
RGB	rgb(55, 46, 165)
HSL	hsl(245, 56%, 41%)
HSV	hsv(245, 72%, 65%)
CMYK	cmyk(66.7%, 72.1%, 0%, 35.3%)
CIE-LAB	lab(28.07, 40.81, -62.52)
CIE-LCH	lch(28.07, 74.66, 303.13°)
OKLab	oklab(39.73% 0.0238 -0.1805)
OKLCH	oklch(39.73% 0.182 277.5)
XYZ	xyz(9.3419, 5.4820, 36.1559)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372EA5 #9CA52E

analogous

#2E61A5 #372EA5 #732EA5

triadic

#372EA5 #A5372E #2EA537

tetradic

#372EA5 #A52E61 #9CA52E #2EA573

square

#372EA5 #A52E61 #9CA52E #2EA573

split-complementary

#372EA5 #A5732E #61A52E

monochromatic

#171345 #272175 #372EA5 #4F45CB #7C75D8

Accessibility & contrast

On white

10.02

#372EA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#372EA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372EA5

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372EA5	#FFFFFF	#000000	##FFFFFF
##372EA5	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A9

Deuteranopia (green-blind)

#003DA3

Tritanopia (blue-blind)

#004F66

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ea5;
/* rgb */ color: rgb(55, 46, 165);
/* oklch */ color: oklch(39.7% 0.182 277.5);

Tailwind

colors: {
  custom: {
    50: '#7d68c1',
    500: '#372ea5',
    950: '#000000',
  },
}

SCSS

$custom: #372ea5;
$custom-light: #7d68c1;
$custom-dark: #000000;

JSON

{
  "hex": "#372ea5",
  "rgb": {
    "r": 55,
    "g": 46,
    "b": 165
  },
  "hsl": {
    "h": 244.538,
    "s": 56.398,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39734,
    "c": 0.18209,
    "h": 277.5
  },
  "luminance": 0.05483
}

Semantic roles & 50–950 ramp

primary

#372EA5

secondary

#BAC06F

accent

#E048D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372EA5

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

Preview Lab → · Contrast checker → · Palette generator →