#3728C5#3728C5

#3728C5 is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.3% C 0.226 H 275.0°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#3728C5
RGB	rgb(55, 40, 197)
HSL	hsl(246, 66%, 46%)
HSV	hsv(246, 80%, 77%)
CMYK	cmyk(72.1%, 79.7%, 0%, 22.7%)
CIE-LAB	lab(30.30, 54.07, -77.88)
CIE-LCH	lch(30.30, 94.81, 304.77°)
OKLab	oklab(42.3% 0.0197 -0.2252)
OKLCH	oklch(42.3% 0.226 275)
XYZ	xyz(12.4091, 6.3598, 53.3861)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3728C5 #B6C528

analogous

#2868C5 #3728C5 #8528C5

triadic

#3728C5 #C53728 #28C537

tetradic

#3728C5 #C52868 #B6C528 #28C585

square

#3728C5 #C52868 #B6C528 #28C585

split-complementary

#3728C5 #C58528 #68C528

monochromatic

#1B135F #291E92 #3728C5 #5C4FDB #8B82E6

Accessibility & contrast

On white

9.24

#3728C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#3728C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3728C5

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3728C5	#FFFFFF	#000000	##FFFFFF
##3728C5	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EC9

Deuteranopia (green-blind)

#0040C2

Tritanopia (blue-blind)

#005977

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3728c5;
/* rgb */ color: rgb(55, 40, 197);
/* oklch */ color: oklch(42.3% 0.226 275.0);

Tailwind

colors: {
  custom: {
    50: '#8466d8',
    500: '#3728c5',
    950: '#000000',
  },
}

SCSS

$custom: #3728c5;
$custom-light: #8466d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3728c5",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 197
  },
  "hsl": {
    "h": 245.732,
    "s": 66.245,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42304,
    "c": 0.22605,
    "h": 275
  },
  "luminance": 0.06361
}

Semantic roles & 50–950 ramp

primary

#3728C5

secondary

#C6CE7A

accent

#E93FD9

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0615

muted

#7E7A83

Preview Lab

Preview with #3728C5

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

Preview Lab → · Contrast checker → · Palette generator →