#373DAA#373DAA

#373DAA is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.171 H 274.1°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#373DAA
RGB	rgb(55, 61, 170)
HSL	hsl(237, 51%, 44%)
HSV	hsv(237, 68%, 67%)
CMYK	cmyk(67.6%, 64.1%, 0%, 33.3%)
CIE-LAB	lab(31.92, 33.33, -59.20)
CIE-LCH	lch(31.92, 67.94, 299.38°)
OKLab	oklab(42.67% 0.0122 -0.1708)
OKLCH	oklch(42.67% 0.171 274.1)
XYZ	xyz(10.4976, 7.0510, 38.8302)
Luminance	0.0705 (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

#373DAA #AAA437

analogous

#3777AA #373DAA #6B37AA

triadic

#373DAA #AA373D #3DAA37

tetradic

#373DAA #AA3777 #AAA437 #37AA6B

square

#373DAA #AA3777 #AAA437 #37AA6B

split-complementary

#373DAA #AA6B37 #77AA37

monochromatic

#191C4E #282C7C #373DAA #565CC8 #8488D7

Accessibility & contrast

On white

8.71

#373DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#373DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DAA

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373DAA	#FFFFFF	#000000	##FFFFFF
##373DAA	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AD

Deuteranopia (green-blind)

#0046A8

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #373daa;
/* rgb */ color: rgb(55, 61, 170);
/* oklch */ color: oklch(42.7% 0.171 274.1);

Tailwind

colors: {
  custom: {
    50: '#7c72c4',
    500: '#373daa',
    950: '#000000',
  },
}

SCSS

$custom: #373daa;
$custom-light: #7c72c4;
$custom-dark: #000000;

JSON

{
  "hex": "#373daa",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 170
  },
  "hsl": {
    "h": 236.87,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42665,
    "c": 0.17124,
    "h": 274.1
  },
  "luminance": 0.07052
}

Semantic roles & 50–950 ramp

primary

#373DAA

secondary

#C1BD7C

accent

#D34DDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373DAA

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

Preview Lab → · Contrast checker → · Palette generator →