#373ABC#373ABC

#373ABC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.198 H 273.6°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#373ABC
RGB	rgb(55, 58, 188)
HSL	hsl(239, 55%, 48%)
HSV	hsv(239, 71%, 74%)
CMYK	cmyk(70.7%, 69.1%, 0%, 26.3%)
CIE-LAB	lab(32.85, 41.40, -68.38)
CIE-LCH	lch(32.85, 79.94, 301.19°)
OKLab	oklab(43.83% 0.0125 -0.1977)
OKLCH	oklch(43.83% 0.198 273.6)
XYZ	xyz(12.1627, 7.4680, 48.3677)
Luminance	0.0747 (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

#373ABC #BCB937

analogous

#377CBC #373ABC #7737BC

triadic

#373ABC #BC373A #3ABC37

tetradic

#373ABC #BC377C #BCB937 #37BC77

square

#373ABC #BC377C #BCB937 #37BC77

split-complementary

#373ABC #BC7737 #7CBC37

monochromatic

#1B1D5D #292B8D #373ABC #6062D0 #8F91DE

Accessibility & contrast

On white

8.42

#373ABC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#373ABC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373ABC

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373ABC	#FFFFFF	#000000	##FFFFFF
##373ABC	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C0

Deuteranopia (green-blind)

#0047BA

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373abc;
/* rgb */ color: rgb(55, 58, 188);
/* oklch */ color: oklch(43.8% 0.198 273.6);

Tailwind

colors: {
  custom: {
    50: '#8171d1',
    500: '#373abc',
    950: '#000000',
  },
}

SCSS

$custom: #373abc;
$custom-light: #8171d1;
$custom-dark: #000000;

JSON

{
  "hex": "#373abc",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 188
  },
  "hsl": {
    "h": 238.647,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43834,
    "c": 0.19807,
    "h": 273.6
  },
  "luminance": 0.07469
}

Semantic roles & 50–950 ramp

primary

#373ABC

secondary

#C9C786

accent

#DB4ADE

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373ABC

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

Preview Lab → · Contrast checker → · Palette generator →