#373CB4#373CB4

#373CB4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.186 H 273.8°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#373CB4
RGB	rgb(55, 60, 180)
HSL	hsl(238, 53%, 46%)
HSV	hsv(238, 69%, 71%)
CMYK	cmyk(69.4%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(32.56, 37.44, -64.11)
CIE-LCH	lch(32.56, 74.25, 300.29°)
OKLab	oklab(43.4% 0.0121 -0.1852)
OKLCH	oklch(43.4% 0.186 273.8)
XYZ	xyz(11.4269, 7.3382, 43.9854)
Luminance	0.0734 (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

#373CB4 #B4AF37

analogous

#377AB4 #373CB4 #7037B4

triadic

#373CB4 #B4373C #3CB437

tetradic

#373CB4 #B4377A #B4AF37 #37B470

square

#373CB4 #B4377A #B4AF37 #37B470

split-complementary

#373CB4 #B47037 #7AB437

monochromatic

#1A1D56 #292C85 #373CB4 #5B60CD #8A8DDB

Accessibility & contrast

On white

8.51

#373CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#373CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB4

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CB4	#FFFFFF	#000000	##FFFFFF
##373CB4	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373cb4;
/* rgb */ color: rgb(55, 60, 180);
/* oklch */ color: oklch(43.4% 0.186 273.8);

Tailwind

colors: {
  custom: {
    50: '#7f72cb',
    500: '#373cb4',
    950: '#000000',
  },
}

SCSS

$custom: #373cb4;
$custom-light: #7f72cb;
$custom-dark: #000000;

JSON

{
  "hex": "#373cb4",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 237.6,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43403,
    "c": 0.18559,
    "h": 273.8
  },
  "luminance": 0.07339
}

Semantic roles & 50–950 ramp

primary

#373CB4

secondary

#C6C381

accent

#D74BDD

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373CB4

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

Preview Lab → · Contrast checker → · Palette generator →