#373FB6#373FB6

#373FB6 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.1% C 0.185 H 273.1°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#373FB6
RGB	rgb(55, 63, 182)
HSL	hsl(236, 54%, 46%)
HSV	hsv(236, 70%, 71%)
CMYK	cmyk(69.8%, 65.4%, 0%, 28.6%)
CIE-LAB	lab(33.44, 36.27, -63.86)
CIE-LCH	lch(33.44, 73.44, 299.60°)
OKLab	oklab(44.1% 0.0099 -0.1844)
OKLCH	oklch(44.1% 0.185 273.1)
XYZ	xyz(11.7937, 7.7435, 45.1200)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373FB6 #B6AE37

analogous

#377FB6 #373FB6 #6F37B6

triadic

#373FB6 #B6373F #3FB637

tetradic

#373FB6 #B6377F #B6AE37 #37B66F

square

#373FB6 #B6377F #B6AE37 #37B66F

split-complementary

#373FB6 #B66F37 #7FB637

monochromatic

#1B1E58 #292F87 #373FB6 #5C64CE #8B90DC

Accessibility & contrast

On white

8.24

#373FB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#373FB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FB6

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373FB6	#FFFFFF	#000000	##FFFFFF
##373FB6	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BA

Deuteranopia (green-blind)

#0049B4

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #373fb6;
/* rgb */ color: rgb(55, 63, 182);
/* oklch */ color: oklch(44.1% 0.185 273.1);

Tailwind

colors: {
  custom: {
    50: '#7f74cd',
    500: '#373fb6',
    950: '#000000',
  },
}

SCSS

$custom: #373fb6;
$custom-light: #7f74cd;
$custom-dark: #000000;

JSON

{
  "hex": "#373fb6",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 182
  },
  "hsl": {
    "h": 236.22,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44098,
    "c": 0.1847,
    "h": 273.1
  },
  "luminance": 0.07745
}

Semantic roles & 50–950 ramp

primary

#373FB6

secondary

#C6C282

accent

#D44BDD

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #373FB6

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

Preview Lab → · Contrast checker → · Palette generator →