#373578#373578

#373578 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 37.0% C 0.111 H 280.8°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#373578
RGB	rgb(55, 53, 120)
HSL	hsl(242, 39%, 34%)
HSV	hsv(242, 56%, 47%)
CMYK	cmyk(54.2%, 55.8%, 0%, 52.9%)
CIE-LAB	lab(25.90, 21.06, -38.22)
CIE-LCH	lch(25.90, 43.64, 298.86°)
OKLab	oklab(36.97% 0.0209 -0.1092)
OKLCH	oklch(36.97% 0.111 280.8)
XYZ	xyz(6.2378, 4.7141, 18.3469)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373578 #767835

analogous

#355578 #373578 #593578

triadic

#373578 #783735 #357837

tetradic

#373578 #783555 #767835 #357859

square

#373578 #783555 #767835 #357859

split-complementary

#373578 #785935 #557835

monochromatic

#101023 #24224E #373578 #4A48A2 #6D6ABD

Accessibility & contrast

On white

10.81

#373578 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#373578 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373578

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373578	#FFFFFF	#000000	##FFFFFF
##373578	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F407A

Deuteranopia (green-blind)

#063B77

Tritanopia (blue-blind)

#1C4451

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #373578;
/* rgb */ color: rgb(55, 53, 120);
/* oklch */ color: oklch(37.0% 0.111 280.8);

Tailwind

colors: {
  custom: {
    50: '#736c9f',
    500: '#373578',
    950: '#000000',
  },
}

SCSS

$custom: #373578;
$custom-light: #736c9f;
$custom-dark: #000000;

JSON

{
  "hex": "#373578",
  "rgb": {
    "r": 55,
    "g": 53,
    "b": 120
  },
  "hsl": {
    "h": 241.791,
    "s": 38.728,
    "l": 33.922
  },
  "oklch": {
    "l": 0.36968,
    "c": 0.11115,
    "h": 280.8
  },
  "luminance": 0.04714
}

Semantic roles & 50–950 ramp

primary

#373578

secondary

#A4A663

accent

#CF59CB

background

#F7F6F9

surface

#EDEBF2

border

#C8C6CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #373578

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

Preview Lab → · Contrast checker → · Palette generator →