#373AAA#373AAA

#373AAA is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.1% C 0.175 H 274.8°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#373AAA
RGB	rgb(55, 58, 170)
HSL	hsl(238, 51%, 44%)
HSV	hsv(238, 68%, 67%)
CMYK	cmyk(67.6%, 65.9%, 0%, 33.3%)
CIE-LAB	lab(31.21, 35.23, -60.38)
CIE-LCH	lch(31.21, 69.90, 300.26°)
OKLab	oklab(42.14% 0.0145 -0.1742)
OKLCH	oklch(42.14% 0.175 274.8)
XYZ	xyz(10.3419, 6.7397, 38.7783)
Luminance	0.0674 (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

#373AAA #AAA737

analogous

#3774AA #373AAA #6E37AA

triadic

#373AAA #AA373A #3AAA37

tetradic

#373AAA #AA3774 #AAA737 #37AA6E

square

#373AAA #AA3774 #AAA737 #37AA6E

split-complementary

#373AAA #AA6E37 #74AA37

monochromatic

#191A4E #282A7C #373AAA #5659C8 #8486D7

Accessibility & contrast

On white

8.94

#373AAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#373AAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AAA

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AAA	#FFFFFF	#000000	##FFFFFF
##373AAA	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAE

Deuteranopia (green-blind)

#0044A8

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #373aaa;
/* rgb */ color: rgb(55, 58, 170);
/* oklch */ color: oklch(42.1% 0.175 274.8);

Tailwind

colors: {
  custom: {
    50: '#7d70c4',
    500: '#373aaa',
    950: '#000000',
  },
}

SCSS

$custom: #373aaa;
$custom-light: #7d70c4;
$custom-dark: #000000;

JSON

{
  "hex": "#373aaa",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 170
  },
  "hsl": {
    "h": 238.435,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42142,
    "c": 0.17485,
    "h": 274.8
  },
  "luminance": 0.06741
}

Semantic roles & 50–950 ramp

primary

#373AAA

secondary

#C1BF7C

accent

#D74DDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #373AAA

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

Preview Lab → · Contrast checker → · Palette generator →