#373DBE#373DBE

#373DBE is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.5% C 0.197 H 273.0°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#373DBE
RGB	rgb(55, 61, 190)
HSL	hsl(237, 55%, 48%)
HSV	hsv(237, 71%, 75%)
CMYK	cmyk(71.1%, 67.9%, 0%, 25.5%)
CIE-LAB	lab(33.70, 40.27, -68.16)
CIE-LCH	lch(33.70, 79.16, 300.58°)
OKLab	oklab(44.51% 0.0104 -0.197)
OKLCH	oklch(44.51% 0.197 273)
XYZ	xyz(12.5354, 7.8662, 49.5629)
Luminance	0.0787 (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

#373DBE #BEB837

analogous

#3781BE #373DBE #7437BE

triadic

#373DBE #BE373D #3DBE37

tetradic

#373DBE #BE3781 #BEB837 #37BE74

square

#373DBE #BE3781 #BEB837 #37BE74

split-complementary

#373DBE #BE7437 #81BE37

monochromatic

#1C1F5F #292E8F #373DBE #6166D1 #9094DF

Accessibility & contrast

On white

8.16

#373DBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#373DBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DBE

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373DBE	#FFFFFF	#000000	##FFFFFF
##373DBE	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C2

Deuteranopia (green-blind)

#0049BC

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #373dbe;
/* rgb */ color: rgb(55, 61, 190);
/* oklch */ color: oklch(44.5% 0.197 273.0);

Tailwind

colors: {
  custom: {
    50: '#8173d3',
    500: '#373dbe',
    950: '#000000',
  },
}

SCSS

$custom: #373dbe;
$custom-light: #8173d3;
$custom-dark: #000000;

JSON

{
  "hex": "#373dbe",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 190
  },
  "hsl": {
    "h": 237.333,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44507,
    "c": 0.19729,
    "h": 273
  },
  "luminance": 0.07867
}

Semantic roles & 50–950 ramp

primary

#373DBE

secondary

#CAC787

accent

#D849DE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373DBE

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

Preview Lab → · Contrast checker → · Palette generator →