#373579#373579

#373579 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 37.0% C 0.113 H 280.7°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#373579
RGB	rgb(55, 53, 121)
HSL	hsl(242, 39%, 34%)
HSV	hsv(242, 56%, 47%)
CMYK	cmyk(54.5%, 56.2%, 0%, 52.5%)
CIE-LAB	lab(25.98, 21.40, -38.73)
CIE-LCH	lch(25.98, 44.26, 298.93°)
OKLab	oklab(37.05% 0.0209 -0.1107)
OKLCH	oklch(37.05% 0.113 280.7)
XYZ	xyz(6.2988, 4.7385, 18.6682)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373579 #777935

analogous

#355579 #373579 #593579

triadic

#373579 #793735 #357937

tetradic

#373579 #793555 #777935 #357959

square

#373579 #793555 #777935 #357959

split-complementary

#373579 #795935 #557935

monochromatic

#101024 #24224E #373579 #4A48A4 #6D6ABE

Accessibility & contrast

On white

10.78

#373579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#373579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373579

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373579	#FFFFFF	#000000	##FFFFFF
##373579	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D407B

Deuteranopia (green-blind)

#043B78

Tritanopia (blue-blind)

#1B4451

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #373579;
/* rgb */ color: rgb(55, 53, 121);
/* oklch */ color: oklch(37.0% 0.113 280.7);

Tailwind

colors: {
  custom: {
    50: '#746ca0',
    500: '#373579',
    950: '#000000',
  },
}

SCSS

$custom: #373579;
$custom-light: #746ca0;
$custom-dark: #000000;

JSON

{
  "hex": "#373579",
  "rgb": {
    "r": 55,
    "g": 53,
    "b": 121
  },
  "hsl": {
    "h": 241.765,
    "s": 39.08,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37045,
    "c": 0.11266,
    "h": 280.7
  },
  "luminance": 0.04739
}

Semantic roles & 50–950 ramp

primary

#373579

secondary

#A4A663

accent

#CF59CC

background

#F7F6F9

surface

#EDEBF2

border

#C8C6CC

text

#08070F

muted

#7B7A7E

Preview Lab

Preview with #373579

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

Preview Lab → · Contrast checker → · Palette generator →