#372DA3#372DA3

#372DA3 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.4% C 0.181 H 277.9°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#372DA3
RGB	rgb(55, 45, 163)
HSL	hsl(245, 57%, 41%)
HSV	hsv(245, 72%, 64%)
CMYK	cmyk(66.3%, 72.4%, 0%, 36.1%)
CIE-LAB	lab(27.66, 40.73, -61.97)
CIE-LCH	lch(27.66, 74.16, 303.31°)
OKLab	oklab(39.39% 0.0248 -0.1789)
OKLCH	oklch(39.39% 0.181 277.9)
XYZ	xyz(9.1227, 5.3326, 35.1918)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372DA3 #99A32D

analogous

#2D5EA3 #372DA3 #722DA3

triadic

#372DA3 #A3372D #2DA337

tetradic

#372DA3 #A32D5E #99A32D #2DA372

square

#372DA3 #A32D5E #99A32D #2DA372

split-complementary

#372DA3 #A3722D #5EA32D

monochromatic

#171343 #272073 #372DA3 #4E42CB #7B72D8

Accessibility & contrast

On white

10.16

#372DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#372DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372DA3

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372DA3	#FFFFFF	#000000	##FFFFFF
##372DA3	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A7

Deuteranopia (green-blind)

#003CA1

Tritanopia (blue-blind)

#004E65

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #372da3;
/* rgb */ color: rgb(55, 45, 163);
/* oklch */ color: oklch(39.4% 0.181 277.9);

Tailwind

colors: {
  custom: {
    50: '#7c68bf',
    500: '#372da3',
    950: '#000000',
  },
}

SCSS

$custom: #372da3;
$custom-light: #7c68bf;
$custom-dark: #000000;

JSON

{
  "hex": "#372da3",
  "rgb": {
    "r": 55,
    "g": 45,
    "b": 163
  },
  "hsl": {
    "h": 245.085,
    "s": 56.731,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39387,
    "c": 0.18064,
    "h": 277.9
  },
  "luminance": 0.05333
}

Semantic roles & 50–950 ramp

primary

#372DA3

secondary

#B9C06C

accent

#E048D3

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372DA3

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

Preview Lab → · Contrast checker → · Palette generator →