#373ACC#373ACC

#373ACC is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.4% C 0.218 H 272.7°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#373ACC
RGB	rgb(55, 58, 204)
HSL	hsl(239, 59%, 51%)
HSV	hsv(239, 73%, 80%)
CMYK	cmyk(73%, 71.6%, 0%, 20%)
CIE-LAB	lab(34.39, 46.76, -75.21)
CIE-LCH	lch(34.39, 88.56, 301.87°)
OKLab	oklab(45.4% 0.0103 -0.2176)
OKLCH	oklch(45.4% 0.218 272.7)
XYZ	xyz(13.9840, 8.1965, 57.9601)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.25

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373ACC #CCC937

analogous

#3784CC #373ACC #7E37CC

triadic

#373ACC #CC373A #3ACC37

tetradic

#373ACC #CC3784 #CCC937 #37CC7E

square

#373ACC #CC3784 #CCC937 #37CC7E

split-complementary

#373ACC #CC7E37 #84CC37

monochromatic

#1C1D6D #282B9E #373ACC #686AD8 #999AE5

Accessibility & contrast

On white

7.96

#373ACC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#373ACC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373ACC

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373ACC	#FFFFFF	#000000	##FFFFFF
##373ACC	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004AC9

Tritanopia (blue-blind)

#00637F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #373acc;
/* rgb */ color: rgb(55, 58, 204);
/* oklch */ color: oklch(45.4% 0.218 272.7);

Tailwind

colors: {
  custom: {
    50: '#8471dd',
    500: '#373acc',
    950: '#000000',
  },
}

SCSS

$custom: #373acc;
$custom-light: #8471dd;
$custom-dark: #000000;

JSON

{
  "hex": "#373acc",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 204
  },
  "hsl": {
    "h": 238.792,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45404,
    "c": 0.21785,
    "h": 272.7
  },
  "luminance": 0.08198
}

Semantic roles & 50–950 ramp

primary

#373ACC

secondary

#D0CF8E

accent

#DF45E3

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #373ACC

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

Preview Lab → · Contrast checker → · Palette generator →