#373BB8#373BB8

#373BB8 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.192 H 273.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#373BB8
RGB	rgb(55, 59, 184)
HSL	hsl(238, 54%, 47%)
HSV	hsv(238, 70%, 72%)
CMYK	cmyk(70.1%, 67.9%, 0%, 27.8%)
CIE-LAB	lab(32.70, 39.44, -66.26)
CIE-LCH	lch(32.70, 77.11, 300.76°)
OKLab	oklab(43.61% 0.0124 -0.1915)
OKLCH	oklch(43.61% 0.192 273.7)
XYZ	xyz(11.7884, 7.3997, 46.1451)
Luminance	0.0740 (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

#373BB8 #B8B437

analogous

#377BB8 #373BB8 #7437B8

triadic

#373BB8 #B8373B #3BB837

tetradic

#373BB8 #B8377B #B8B437 #37B874

square

#373BB8 #B8377B #B8B437 #37B874

split-complementary

#373BB8 #B87437 #7BB837

monochromatic

#1B1D5A #292C89 #373BB8 #5D61CF #8D8FDD

Accessibility & contrast

On white

8.47

#373BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#373BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BB8

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BB8	#FFFFFF	#000000	##FFFFFF
##373BB8	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373bb8;
/* rgb */ color: rgb(55, 59, 184);
/* oklch */ color: oklch(43.6% 0.192 273.7);

Tailwind

colors: {
  custom: {
    50: '#8071ce',
    500: '#373bb8',
    950: '#000000',
  },
}

SCSS

$custom: #373bb8;
$custom-light: #8071ce;
$custom-dark: #000000;

JSON

{
  "hex": "#373bb8",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 184
  },
  "hsl": {
    "h": 238.14,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43613,
    "c": 0.19188,
    "h": 273.7
  },
  "luminance": 0.07401
}

Semantic roles & 50–950 ramp

primary

#373BB8

secondary

#C7C584

accent

#D94ADD

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #373BB8

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

Preview Lab → · Contrast checker → · Palette generator →