#373AAC#373AAC

#373AAC is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.177 H 274.6°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#373AAC
RGB	rgb(55, 58, 172)
HSL	hsl(238, 52%, 45%)
HSV	hsv(238, 68%, 67%)
CMYK	cmyk(68%, 66.3%, 0%, 32.5%)
CIE-LAB	lab(31.38, 35.92, -61.28)
CIE-LCH	lch(31.38, 71.03, 300.38°)
OKLab	oklab(42.33% 0.0143 -0.1769)
OKLCH	oklch(42.33% 0.177 274.6)
XYZ	xyz(10.5325, 6.8159, 39.7823)
Luminance	0.0682 (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

#373AAC #ACA937

analogous

#3774AC #373AAC #6F37AC

triadic

#373AAC #AC373A #3AAC37

tetradic

#373AAC #AC3774 #ACA937 #37AC6F

square

#373AAC #AC3774 #ACA937 #37AC6F

split-complementary

#373AAC #AC6F37 #74AC37

monochromatic

#191B4F #282A7E #373AAC #575AC9 #8587D8

Accessibility & contrast

On white

8.89

#373AAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#373AAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AAC

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AAC	#FFFFFF	#000000	##FFFFFF
##373AAC	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0045AA

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #373aac;
/* rgb */ color: rgb(55, 58, 172);
/* oklch */ color: oklch(42.3% 0.177 274.6);

Tailwind

colors: {
  custom: {
    50: '#7d70c6',
    500: '#373aac',
    950: '#000000',
  },
}

SCSS

$custom: #373aac;
$custom-light: #7d70c6;
$custom-dark: #000000;

JSON

{
  "hex": "#373aac",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 172
  },
  "hsl": {
    "h": 238.462,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42325,
    "c": 0.17749,
    "h": 274.6
  },
  "luminance": 0.06817
}

Semantic roles & 50–950 ramp

primary

#373AAC

secondary

#C2C07D

accent

#D74DDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #373AAC

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

Preview Lab → · Contrast checker → · Palette generator →