#373799#373799

#373799 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.1% C 0.156 H 276.8°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#373799
RGB	rgb(55, 55, 153)
HSL	hsl(240, 47%, 41%)
HSV	hsv(240, 64%, 60%)
CMYK	cmyk(64.1%, 64.1%, 0%, 40%)
CIE-LAB	lab(29.01, 31.22, -53.68)
CIE-LCH	lch(29.01, 62.09, 300.18°)
OKLab	oklab(40.09% 0.0183 -0.1546)
OKLCH	oklch(40.09% 0.156 276.8)
XYZ	xyz(8.6896, 5.8438, 30.8009)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.72

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373799 #999937

analogous

#376899 #373799 #683799

triadic

#373799 #993737 #379937

tetradic

#373799 #993768 #999937 #379968

square

#373799 #993768 #999937 #379968

split-complementary

#373799 #996837 #689937

monochromatic

#17173F #27276C #373799 #4E4EBF #7B7BD0

Accessibility & contrast

On white

9.68

#373799 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#373799 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373799

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373799	#FFFFFF	#000000	##FFFFFF
##373799	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#005062

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #373799;
/* rgb */ color: rgb(55, 55, 153);
/* oklch */ color: oklch(40.1% 0.156 276.8);

Tailwind

colors: {
  custom: {
    50: '#796eb8',
    500: '#373799',
    950: '#000000',
  },
}

SCSS

$custom: #373799;
$custom-light: #796eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#373799",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 153
  },
  "hsl": {
    "h": 240,
    "s": 47.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40085,
    "c": 0.1557,
    "h": 276.8
  },
  "luminance": 0.05845
}

Semantic roles & 50–950 ramp

primary

#373799

secondary

#B9B973

accent

#D751D7

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #373799

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

Preview Lab → · Contrast checker → · Palette generator →