#373AAE#373AAE

#373AAE is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.180 H 274.5°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#373AAE
RGB	rgb(55, 58, 174)
HSL	hsl(238, 52%, 45%)
HSV	hsv(238, 68%, 68%)
CMYK	cmyk(68.4%, 66.7%, 0%, 31.8%)
CIE-LAB	lab(31.56, 36.61, -62.19)
CIE-LCH	lch(31.56, 72.16, 300.49°)
OKLab	oklab(42.51% 0.0141 -0.1795)
OKLCH	oklch(42.51% 0.18 274.5)
XYZ	xyz(10.7261, 6.8933, 40.8015)
Luminance	0.0689 (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

#373AAE #AEAB37

analogous

#3776AE #373AAE #6F37AE

triadic

#373AAE #AE373A #3AAE37

tetradic

#373AAE #AE3776 #AEAB37 #37AE6F

square

#373AAE #AE3776 #AEAB37 #37AE6F

split-complementary

#373AAE #AE6F37 #76AE37

monochromatic

#1A1B51 #282B7F #373AAE #585BCA #8689D9

Accessibility & contrast

On white

8.83

#373AAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#373AAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AAE

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AAE	#FFFFFF	#000000	##FFFFFF
##373AAE	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0045AC

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #373aae;
/* rgb */ color: rgb(55, 58, 174);
/* oklch */ color: oklch(42.5% 0.180 274.5);

Tailwind

colors: {
  custom: {
    50: '#7e70c7',
    500: '#373aae',
    950: '#000000',
  },
}

SCSS

$custom: #373aae;
$custom-light: #7e70c7;
$custom-dark: #000000;

JSON

{
  "hex": "#373aae",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 174
  },
  "hsl": {
    "h": 238.487,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4251,
    "c": 0.18011,
    "h": 274.5
  },
  "luminance": 0.06894
}

Semantic roles & 50–950 ramp

primary

#373AAE

secondary

#C3C17E

accent

#D84CDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #373AAE

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

Preview Lab → · Contrast checker → · Palette generator →