#373EAA#373EAA

#373EAA is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.170 H 273.9°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#373EAA
RGB	rgb(55, 62, 170)
HSL	hsl(236, 51%, 44%)
HSV	hsv(236, 68%, 67%)
CMYK	cmyk(67.6%, 63.5%, 0%, 33.3%)
CIE-LAB	lab(32.17, 32.69, -58.81)
CIE-LCH	lch(32.17, 67.28, 299.07°)
OKLab	oklab(42.84% 0.0114 -0.1696)
OKLCH	oklch(42.84% 0.17 273.9)
XYZ	xyz(10.5515, 7.1588, 38.8481)
Luminance	0.0716 (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

#373EAA #AAA337

analogous

#3778AA #373EAA #6A37AA

triadic

#373EAA #AA373E #3EAA37

tetradic

#373EAA #AA3778 #AAA337 #37AA6A

square

#373EAA #AA3778 #AAA337 #37AA6A

split-complementary

#373EAA #AA6A37 #78AA37

monochromatic

#191C4E #282D7C #373EAA #565DC8 #8489D7

Accessibility & contrast

On white

8.63

#373EAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#373EAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EAA

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EAA	#FFFFFF	#000000	##FFFFFF
##373EAA	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0047A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #373eaa;
/* rgb */ color: rgb(55, 62, 170);
/* oklch */ color: oklch(42.8% 0.170 273.9);

Tailwind

colors: {
  custom: {
    50: '#7c73c4',
    500: '#373eaa',
    950: '#000000',
  },
}

SCSS

$custom: #373eaa;
$custom-light: #7c73c4;
$custom-dark: #000000;

JSON

{
  "hex": "#373eaa",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 170
  },
  "hsl": {
    "h": 236.348,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42843,
    "c": 0.17001,
    "h": 273.9
  },
  "luminance": 0.0716
}

Semantic roles & 50–950 ramp

primary

#373EAA

secondary

#C1BD7C

accent

#D24DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373EAA

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

Preview Lab → · Contrast checker → · Palette generator →