#373DBD#373DBD

#373DBD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.4% C 0.196 H 273.1°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#373DBD
RGB	rgb(55, 61, 189)
HSL	hsl(237, 55%, 48%)
HSV	hsv(237, 71%, 74%)
CMYK	cmyk(70.9%, 67.7%, 0%, 25.9%)
CIE-LAB	lab(33.61, 39.93, -67.72)
CIE-LCH	lch(33.61, 78.61, 300.53°)
OKLab	oklab(44.41% 0.0106 -0.1957)
OKLCH	oklch(44.41% 0.196 273.1)
XYZ	xyz(12.4265, 7.8226, 48.9893)
Luminance	0.0782 (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

#373DBD #BDB737

analogous

#3780BD #373DBD #7437BD

triadic

#373DBD #BD373D #3DBD37

tetradic

#373DBD #BD3780 #BDB737 #37BD74

square

#373DBD #BD3780 #BDB737 #37BD74

split-complementary

#373DBD #BD7437 #80BD37

monochromatic

#1B1E5E #292E8E #373DBD #6065D1 #9093DF

Accessibility & contrast

On white

8.19

#373DBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#373DBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DBD

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373DBD	#FFFFFF	#000000	##FFFFFF
##373DBD	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C1

Deuteranopia (green-blind)

#0049BB

Tritanopia (blue-blind)

#005F78

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #373dbd;
/* rgb */ color: rgb(55, 61, 189);
/* oklch */ color: oklch(44.4% 0.196 273.1);

Tailwind

colors: {
  custom: {
    50: '#8173d2',
    500: '#373dbd',
    950: '#000000',
  },
}

SCSS

$custom: #373dbd;
$custom-light: #8173d2;
$custom-dark: #000000;

JSON

{
  "hex": "#373dbd",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 189
  },
  "hsl": {
    "h": 237.313,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44412,
    "c": 0.19601,
    "h": 273.1
  },
  "luminance": 0.07824
}

Semantic roles & 50–950 ramp

primary

#373DBD

secondary

#C9C686

accent

#D84ADE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373DBD

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

Preview Lab → · Contrast checker → · Palette generator →