#373699#373699

#373699 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.157 H 277.0°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#373699
RGB	rgb(55, 54, 153)
HSL	hsl(241, 48%, 41%)
HSV	hsv(241, 65%, 60%)
CMYK	cmyk(64.1%, 64.7%, 0%, 40%)
CIE-LAB	lab(28.77, 31.86, -54.07)
CIE-LCH	lch(28.77, 62.76, 300.50°)
OKLab	oklab(39.91% 0.0192 -0.1558)
OKLCH	oklch(39.91% 0.157 277)
XYZ	xyz(8.6426, 5.7498, 30.7852)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373699 #989936

analogous

#366699 #373699 #683699

triadic

#373699 #993736 #369937

tetradic

#373699 #993666 #989936 #369968

square

#373699 #993666 #989936 #369968

split-complementary

#373699 #996836 #669936

monochromatic

#16163F #27266C #373699 #4D4CC0 #7A7AD0

Accessibility & contrast

On white

9.77

#373699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#373699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373699

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373699	#FFFFFF	#000000	##FFFFFF
##373699	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#004F62

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #373699;
/* rgb */ color: rgb(55, 54, 153);
/* oklch */ color: oklch(39.9% 0.157 277.0);

Tailwind

colors: {
  custom: {
    50: '#7a6db8',
    500: '#373699',
    950: '#000000',
  },
}

SCSS

$custom: #373699;
$custom-light: #7a6db8;
$custom-dark: #000000;

JSON

{
  "hex": "#373699",
  "rgb": {
    "r": 55,
    "g": 54,
    "b": 153
  },
  "hsl": {
    "h": 240.606,
    "s": 47.826,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39907,
    "c": 0.15697,
    "h": 277
  },
  "luminance": 0.0575
}

Semantic roles & 50–950 ramp

primary

#373699

secondary

#B8B972

accent

#D750D6

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #373699

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

Preview Lab → · Contrast checker → · Palette generator →