#373791#373791

#373791 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.145 H 277.5°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#373791
RGB	rgb(55, 55, 145)
HSL	hsl(240, 45%, 39%)
HSV	hsv(240, 62%, 57%)
CMYK	cmyk(62.1%, 62.1%, 0%, 43.1%)
CIE-LAB	lab(28.35, 28.43, -49.86)
CIE-LCH	lch(28.35, 57.39, 299.69°)
OKLab	oklab(39.39% 0.0188 -0.1434)
OKLCH	oklch(39.39% 0.145 277.5)
XYZ	xyz(8.0509, 5.5883, 27.4370)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373791 #919137

analogous

#376491 #373791 #643791

triadic

#373791 #913737 #379137

tetradic

#373791 #913764 #919137 #379164

square

#373791 #913764 #919137 #379164

split-complementary

#373791 #916437 #649137

monochromatic

#151538 #262665 #373791 #4B4BBB #7777CB

Accessibility & contrast

On white

9.92

#373791 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#373791 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373791

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373791	#FFFFFF	#000000	##FFFFFF
##373791	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004794

Deuteranopia (green-blind)

#003F8F

Tritanopia (blue-blind)

#004D5E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #373791;
/* rgb */ color: rgb(55, 55, 145);
/* oklch */ color: oklch(39.4% 0.145 277.5);

Tailwind

colors: {
  custom: {
    50: '#786eb2',
    500: '#373791',
    950: '#000000',
  },
}

SCSS

$custom: #373791;
$custom-light: #786eb2;
$custom-dark: #000000;

JSON

{
  "hex": "#373791",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 145
  },
  "hsl": {
    "h": 240,
    "s": 45,
    "l": 39.216
  },
  "oklch": {
    "l": 0.39388,
    "c": 0.14463,
    "h": 277.5
  },
  "luminance": 0.05589
}

Semantic roles & 50–950 ramp

primary

#373791

secondary

#B4B470

accent

#D553D5

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #373791

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

Preview Lab → · Contrast checker → · Palette generator →