#373CB0#373CB0

#373CB0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.180 H 274.0°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#373CB0
RGB	rgb(55, 60, 176)
HSL	hsl(238, 52%, 45%)
HSV	hsv(238, 69%, 69%)
CMYK	cmyk(68.8%, 65.9%, 0%, 31%)
CIE-LAB	lab(32.21, 36.06, -62.32)
CIE-LCH	lch(32.21, 72.00, 300.05°)
OKLab	oklab(43.03% 0.0125 -0.1799)
OKLCH	oklch(43.03% 0.18 274)
XYZ	xyz(11.0253, 7.1775, 41.8702)
Luminance	0.0718 (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

#373CB0 #B0AB37

analogous

#3778B0 #373CB0 #6F37B0

triadic

#373CB0 #B0373C #3CB037

tetradic

#373CB0 #B03778 #B0AB37 #37B06F

square

#373CB0 #B03778 #B0AB37 #37B06F

split-complementary

#373CB0 #B06F37 #78B037

monochromatic

#1A1C53 #282C81 #373CB0 #595ECB #888BDA

Accessibility & contrast

On white

8.62

#373CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#373CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB0

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CB0	#FFFFFF	#000000	##FFFFFF
##373CB0	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #373cb0;
/* rgb */ color: rgb(55, 60, 176);
/* oklch */ color: oklch(43.0% 0.180 274.0);

Tailwind

colors: {
  custom: {
    50: '#7e72c9',
    500: '#373cb0',
    950: '#000000',
  },
}

SCSS

$custom: #373cb0;
$custom-light: #7e72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#373cb0",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 237.521,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43034,
    "c": 0.18037,
    "h": 274
  },
  "luminance": 0.07179
}

Semantic roles & 50–950 ramp

primary

#373CB0

secondary

#C4C17F

accent

#D64CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373CB0

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

Preview Lab → · Contrast checker → · Palette generator →