#373D8D#373D8D

#373D8D is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.131 H 275.6°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#373D8D
RGB	rgb(55, 61, 141)
HSL	hsl(236, 44%, 38%)
HSV	hsv(236, 61%, 55%)
CMYK	cmyk(61%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(29.59, 23.06, -45.38)
CIE-LCH	lch(29.59, 50.90, 296.94°)
OKLab	oklab(40.21% 0.0127 -0.1302)
OKLCH	oklch(40.21% 0.131 275.6)
XYZ	xyz(8.0504, 6.0722, 25.9420)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373D8D #8D8737

analogous

#37688D #373D8D #5C378D

triadic

#373D8D #8D373D #3D8D37

tetradic

#373D8D #8D3768 #8D8737 #378D5C

square

#373D8D #8D3768 #8D8737 #378D5C

split-complementary

#373D8D #8D5C37 #688D37

monochromatic

#151735 #262A61 #373D8D #4951B8 #757BC9

Accessibility & contrast

On white

9.48

#373D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#373D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373D8D

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373D8D	#FFFFFF	#000000	##FFFFFF
##373D8D	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#014990

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #373d8d;
/* rgb */ color: rgb(55, 61, 141);
/* oklch */ color: oklch(40.2% 0.131 275.6);

Tailwind

colors: {
  custom: {
    50: '#7772af',
    500: '#373d8d',
    950: '#000000',
  },
}

SCSS

$custom: #373d8d;
$custom-light: #7772af;
$custom-dark: #000000;

JSON

{
  "hex": "#373d8d",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 235.814,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40213,
    "c": 0.13079,
    "h": 275.6
  },
  "luminance": 0.06073
}

Semantic roles & 50–950 ramp

primary

#373D8D

secondary

#B2AD6E

accent

#CB54D4

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #373D8D

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

Preview Lab → · Contrast checker → · Palette generator →