#373BBC#373BBC

#373BBC is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.197 H 273.5°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#373BBC
RGB	rgb(55, 59, 188)
HSL	hsl(238, 55%, 48%)
HSV	hsv(238, 71%, 74%)
CMYK	cmyk(70.7%, 68.6%, 0%, 26.3%)
CIE-LAB	lab(33.07, 40.80, -68.02)
CIE-LCH	lch(33.07, 79.32, 300.96°)
OKLab	oklab(43.99% 0.0119 -0.1966)
OKLCH	oklch(43.99% 0.197 273.5)
XYZ	xyz(12.2136, 7.5698, 48.3847)
Luminance	0.0757 (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

#373BBC #BCB837

analogous

#377EBC #373BBC #7537BC

triadic

#373BBC #BC373B #3BBC37

tetradic

#373BBC #BC377E #BCB837 #37BC75

square

#373BBC #BC377E #BCB837 #37BC75

split-complementary

#373BBC #BC7537 #7EBC37

monochromatic

#1B1D5D #292C8D #373BBC #6063D0 #8F92DE

Accessibility & contrast

On white

8.35

#373BBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#373BBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BBC

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BBC	#FFFFFF	#000000	##FFFFFF
##373BBC	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C0

Deuteranopia (green-blind)

#0048BA

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #373bbc;
/* rgb */ color: rgb(55, 59, 188);
/* oklch */ color: oklch(44.0% 0.197 273.5);

Tailwind

colors: {
  custom: {
    50: '#8172d1',
    500: '#373bbc',
    950: '#000000',
  },
}

SCSS

$custom: #373bbc;
$custom-light: #8172d1;
$custom-dark: #000000;

JSON

{
  "hex": "#373bbc",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 188
  },
  "hsl": {
    "h": 238.195,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43993,
    "c": 0.19697,
    "h": 273.5
  },
  "luminance": 0.07571
}

Semantic roles & 50–950 ramp

primary

#373BBC

secondary

#C9C786

accent

#DA4ADE

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373BBC

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

Preview Lab → · Contrast checker → · Palette generator →