#373783#373783

#373783 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.2% C 0.125 H 278.7°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#373783
RGB	rgb(55, 55, 131)
HSL	hsl(240, 41%, 36%)
HSV	hsv(240, 58%, 51%)
CMYK	cmyk(58%, 58%, 0%, 48.6%)
CIE-LAB	lab(27.25, 23.53, -42.97)
CIE-LCH	lch(27.25, 48.99, 298.71°)
OKLab	oklab(38.23% 0.0189 -0.1231)
OKLCH	oklch(38.23% 0.125 278.7)
XYZ	xyz(7.0372, 5.1828, 22.0979)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373783 #838337

analogous

#375D83 #373783 #5D3783

triadic

#373783 #833737 #378337

tetradic

#373783 #83375D #838337 #37835D

square

#373783 #83375D #838337 #37835D

split-complementary

#373783 #835D37 #5D8337

monochromatic

#13132D #252558 #373783 #4949AE #7171C3

Accessibility & contrast

On white

10.31

#373783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#373783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373783

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373783	#FFFFFF	#000000	##FFFFFF
##373783	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004386

Deuteranopia (green-blind)

#003D81

Tritanopia (blue-blind)

#0E4957

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #373783;
/* rgb */ color: rgb(55, 55, 131);
/* oklch */ color: oklch(38.2% 0.125 278.7);

Tailwind

colors: {
  custom: {
    50: '#756ea8',
    500: '#373783',
    950: '#000000',
  },
}

SCSS

$custom: #373783;
$custom-light: #756ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#373783",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 131
  },
  "hsl": {
    "h": 240,
    "s": 40.86,
    "l": 36.471
  },
  "oklch": {
    "l": 0.38228,
    "c": 0.12458,
    "h": 278.7
  },
  "luminance": 0.05183
}

Semantic roles & 50–950 ramp

primary

#373783

secondary

#ACAC6A

accent

#D157D1

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #373783

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

Preview Lab → · Contrast checker → · Palette generator →