#3728C6#3728C6

#3728C6 is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.4% C 0.227 H 274.9°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3728C6
RGB	rgb(55, 40, 198)
HSL	hsl(246, 66%, 47%)
HSV	hsv(246, 80%, 78%)
CMYK	cmyk(72.2%, 79.8%, 0%, 22.4%)
CIE-LAB	lab(30.41, 54.37, -78.28)
CIE-LCH	lch(30.41, 95.31, 304.78°)
OKLab	oklab(42.41% 0.0195 -0.2263)
OKLCH	oklch(42.41% 0.227 274.9)
XYZ	xyz(12.5240, 6.4058, 53.9915)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3728C6 #B7C628

analogous

#2868C6 #3728C6 #8628C6

triadic

#3728C6 #C63728 #28C637

tetradic

#3728C6 #C62868 #B7C628 #28C686

square

#3728C6 #C62868 #B7C628 #28C686

split-complementary

#3728C6 #C68628 #68C628

monochromatic

#1B1360 #291E93 #3728C6 #5D50DC #8C83E6

Accessibility & contrast

On white

9.20

#3728C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3728C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3728C6

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3728C6	#FFFFFF	#000000	##FFFFFF
##3728C6	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ECA

Deuteranopia (green-blind)

#0040C3

Tritanopia (blue-blind)

#005978

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3728c6;
/* rgb */ color: rgb(55, 40, 198);
/* oklch */ color: oklch(42.4% 0.227 274.9);

Tailwind

colors: {
  custom: {
    50: '#8466d9',
    500: '#3728c6',
    950: '#000000',
  },
}

SCSS

$custom: #3728c6;
$custom-light: #8466d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3728c6",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 198
  },
  "hsl": {
    "h": 245.696,
    "s": 66.387,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42414,
    "c": 0.22718,
    "h": 274.9
  },
  "luminance": 0.06407
}

Semantic roles & 50–950 ramp

primary

#3728C6

secondary

#C7CF7B

accent

#E93ED9

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0615

muted

#7E7A83

Preview Lab

Preview with #3728C6

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

Preview Lab → · Contrast checker → · Palette generator →