#373CB2#373CB2

#373CB2 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.183 H 273.9°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#373CB2
RGB	rgb(55, 60, 178)
HSL	hsl(238, 53%, 46%)
HSV	hsv(238, 69%, 70%)
CMYK	cmyk(69.1%, 66.3%, 0%, 30.2%)
CIE-LAB	lab(32.39, 36.75, -63.22)
CIE-LCH	lch(32.39, 73.13, 300.17°)
OKLab	oklab(43.22% 0.0123 -0.1826)
OKLCH	oklch(43.22% 0.183 273.9)
XYZ	xyz(11.2246, 7.2572, 42.9201)
Luminance	0.0726 (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

#373CB2 #B2AD37

analogous

#3779B2 #373CB2 #6F37B2

triadic

#373CB2 #B2373C #3CB237

tetradic

#373CB2 #B23779 #B2AD37 #37B26F

square

#373CB2 #B23779 #B2AD37 #37B26F

split-complementary

#373CB2 #B26F37 #79B237

monochromatic

#1A1C54 #292C83 #373CB2 #5A5FCC #898CDB

Accessibility & contrast

On white

8.57

#373CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#373CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB2

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CB2	#FFFFFF	#000000	##FFFFFF
##373CB2	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0047B0

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #373cb2;
/* rgb */ color: rgb(55, 60, 178);
/* oklch */ color: oklch(43.2% 0.183 273.9);

Tailwind

colors: {
  custom: {
    50: '#7e72ca',
    500: '#373cb2',
    950: '#000000',
  },
}

SCSS

$custom: #373cb2;
$custom-light: #7e72ca;
$custom-dark: #000000;

JSON

{
  "hex": "#373cb2",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 178
  },
  "hsl": {
    "h": 237.561,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43218,
    "c": 0.183,
    "h": 273.9
  },
  "luminance": 0.07258
}

Semantic roles & 50–950 ramp

primary

#373CB2

secondary

#C5C280

accent

#D64CDC

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373CB2

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

Preview Lab → · Contrast checker → · Palette generator →