#373EBA#373EBA

#373EBA is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.191 H 273.1°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#373EBA
RGB	rgb(55, 62, 186)
HSL	hsl(237, 54%, 47%)
HSV	hsv(237, 70%, 73%)
CMYK	cmyk(70.4%, 66.7%, 0%, 27.1%)
CIE-LAB	lab(33.57, 38.28, -66.02)
CIE-LCH	lch(33.57, 76.32, 300.11°)
OKLab	oklab(44.3% 0.0102 -0.1908)
OKLCH	oklch(44.3% 0.191 273.1)
XYZ	xyz(12.1581, 7.8015, 47.3099)
Luminance	0.0780 (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

#373EBA #BAB337

analogous

#3780BA #373EBA #7237BA

triadic

#373EBA #BA373E #3EBA37

tetradic

#373EBA #BA3780 #BAB337 #37BA72

square

#373EBA #BA3780 #BAB337 #37BA72

split-complementary

#373EBA #BA7237 #80BA37

monochromatic

#1B1F5C #292E8B #373EBA #5F65D0 #8E92DE

Accessibility & contrast

On white

8.20

#373EBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#373EBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EBA

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EBA	#FFFFFF	#000000	##FFFFFF
##373EBA	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BE

Deuteranopia (green-blind)

#0049B8

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #373eba;
/* rgb */ color: rgb(55, 62, 186);
/* oklch */ color: oklch(44.3% 0.191 273.1);

Tailwind

colors: {
  custom: {
    50: '#8074d0',
    500: '#373eba',
    950: '#000000',
  },
}

SCSS

$custom: #373eba;
$custom-light: #8074d0;
$custom-dark: #000000;

JSON

{
  "hex": "#373eba",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 186
  },
  "hsl": {
    "h": 236.794,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44297,
    "c": 0.19104,
    "h": 273.1
  },
  "luminance": 0.07803
}

Semantic roles & 50–950 ramp

primary

#373EBA

secondary

#C8C585

accent

#D64ADE

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #373EBA

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

Preview Lab → · Contrast checker → · Palette generator →