#373BAE#373BAE

#373BAE is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.179 H 274.3°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#373BAE
RGB	rgb(55, 59, 174)
HSL	hsl(238, 52%, 45%)
HSV	hsv(238, 68%, 68%)
CMYK	cmyk(68.4%, 66.1%, 0%, 31.8%)
CIE-LAB	lab(31.80, 35.99, -61.80)
CIE-LCH	lch(31.80, 71.52, 300.21°)
OKLab	oklab(42.68% 0.0134 -0.1784)
OKLCH	oklch(42.68% 0.179 274.3)
XYZ	xyz(10.7770, 6.9952, 40.8185)
Luminance	0.0700 (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

#373BAE #AEAA37

analogous

#3777AE #373BAE #6E37AE

triadic

#373BAE #AE373B #3BAE37

tetradic

#373BAE #AE3777 #AEAA37 #37AE6E

square

#373BAE #AE3777 #AEAA37 #37AE6E

split-complementary

#373BAE #AE6E37 #77AE37

monochromatic

#1A1B51 #282B7F #373BAE #585CCA #8689D9

Accessibility & contrast

On white

8.75

#373BAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#373BAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BAE

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BAE	#FFFFFF	#000000	##FFFFFF
##373BAE	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0045AC

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #373bae;
/* rgb */ color: rgb(55, 59, 174);
/* oklch */ color: oklch(42.7% 0.179 274.3);

Tailwind

colors: {
  custom: {
    50: '#7d71c7',
    500: '#373bae',
    950: '#000000',
  },
}

SCSS

$custom: #373bae;
$custom-light: #7d71c7;
$custom-dark: #000000;

JSON

{
  "hex": "#373bae",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 174
  },
  "hsl": {
    "h": 237.983,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4268,
    "c": 0.17893,
    "h": 274.3
  },
  "luminance": 0.06996
}

Semantic roles & 50–950 ramp

primary

#373BAE

secondary

#C3C07E

accent

#D74CDB

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373BAE

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

Preview Lab → · Contrast checker → · Palette generator →