#373EB6#373EB6

#373EB6 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.186 H 273.3°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#373EB6
RGB	rgb(55, 62, 182)
HSL	hsl(237, 54%, 46%)
HSV	hsv(237, 70%, 71%)
CMYK	cmyk(69.8%, 65.9%, 0%, 28.6%)
CIE-LAB	lab(33.21, 36.89, -64.25)
CIE-LCH	lch(33.21, 74.09, 299.87°)
OKLab	oklab(43.93% 0.0106 -0.1856)
OKLCH	oklch(43.93% 0.186 273.3)
XYZ	xyz(11.7388, 7.6338, 45.1017)
Luminance	0.0764 (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

#373EB6 #B6AF37

analogous

#377EB6 #373EB6 #7037B6

triadic

#373EB6 #B6373E #3EB637

tetradic

#373EB6 #B6377E #B6AF37 #37B670

square

#373EB6 #B6377E #B6AF37 #37B670

split-complementary

#373EB6 #B67037 #7EB637

monochromatic

#1B1E58 #292E87 #373EB6 #5C63CE #8B90DC

Accessibility & contrast

On white

8.31

#373EB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#373EB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EB6

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EB6	#FFFFFF	#000000	##FFFFFF
##373EB6	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#0048B4

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #373eb6;
/* rgb */ color: rgb(55, 62, 182);
/* oklch */ color: oklch(43.9% 0.186 273.3);

Tailwind

colors: {
  custom: {
    50: '#7f73cd',
    500: '#373eb6',
    950: '#000000',
  },
}

SCSS

$custom: #373eb6;
$custom-light: #7f73cd;
$custom-dark: #000000;

JSON

{
  "hex": "#373eb6",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 182
  },
  "hsl": {
    "h": 236.693,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43927,
    "c": 0.18587,
    "h": 273.3
  },
  "luminance": 0.07635
}

Semantic roles & 50–950 ramp

primary

#373EB6

secondary

#C6C382

accent

#D54BDD

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #373EB6

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

Preview Lab → · Contrast checker → · Palette generator →