#373EA2#373EA2

#373EA2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.159 H 274.2°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#373EA2
RGB	rgb(55, 62, 162)
HSL	hsl(236, 49%, 43%)
HSV	hsv(236, 66%, 64%)
CMYK	cmyk(66%, 61.7%, 0%, 36.5%)
CIE-LAB	lab(31.50, 29.86, -55.09)
CIE-LCH	lch(31.50, 62.66, 298.46°)
OKLab	oklab(42.14% 0.0118 -0.1587)
OKLCH	oklch(42.14% 0.159 274.2)
XYZ	xyz(9.8176, 6.8653, 34.9832)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373EA2 #A29B37

analogous

#3773A2 #373EA2 #6637A2

triadic

#373EA2 #A2373E #3EA237

tetradic

#373EA2 #A23773 #A29B37 #37A266

square

#373EA2 #A23773 #A29B37 #37A266

split-complementary

#373EA2 #A26637 #73A237

monochromatic

#181B47 #272D74 #373EA2 #5259C4 #8085D4

Accessibility & contrast

On white

8.85

#373EA2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#373EA2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EA2

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EA2	#FFFFFF	#000000	##FFFFFF
##373EA2	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA5

Deuteranopia (green-blind)

#0045A0

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #373ea2;
/* rgb */ color: rgb(55, 62, 162);
/* oklch */ color: oklch(42.1% 0.159 274.2);

Tailwind

colors: {
  custom: {
    50: '#7b73be',
    500: '#373ea2',
    950: '#000000',
  },
}

SCSS

$custom: #373ea2;
$custom-light: #7b73be;
$custom-dark: #000000;

JSON

{
  "hex": "#373ea2",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 162
  },
  "hsl": {
    "h": 236.075,
    "s": 49.309,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42144,
    "c": 0.15915,
    "h": 274.2
  },
  "luminance": 0.06866
}

Semantic roles & 50–950 ramp

primary

#373EA2

secondary

#BDB978

accent

#D04FD9

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #373EA2

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

Preview Lab → · Contrast checker → · Palette generator →