#3728C3#3728C3

#3728C3 is a dark, highly saturated blue. Relative luminance 0.063; OKLCH L 42.1% C 0.224 H 275.2°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#3728C3
RGB	rgb(55, 40, 195)
HSL	hsl(246, 66%, 46%)
HSV	hsv(246, 79%, 76%)
CMYK	cmyk(71.8%, 79.5%, 0%, 23.5%)
CIE-LAB	lab(30.08, 53.47, -77.07)
CIE-LCH	lch(30.08, 93.80, 304.75°)
OKLab	oklab(42.08% 0.0202 -0.2228)
OKLCH	oklch(42.08% 0.224 275.2)
XYZ	xyz(12.1814, 6.2688, 52.1872)
Luminance	0.0627 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3728C3 #B4C328

analogous

#2867C3 #3728C3 #8428C3

triadic

#3728C3 #C33728 #28C337

tetradic

#3728C3 #C32867 #B4C328 #28C384

square

#3728C3 #C32867 #B4C328 #28C384

split-complementary

#3728C3 #C38428 #67C328

monochromatic

#1A135D #291E90 #3728C3 #5B4EDB #8A80E5

Accessibility & contrast

On white

9.32

#3728C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3728C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3728C3

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3728C3	#FFFFFF	#000000	##FFFFFF
##3728C3	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EC7

Deuteranopia (green-blind)

#0040C0

Tritanopia (blue-blind)

#005876

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3728c3;
/* rgb */ color: rgb(55, 40, 195);
/* oklch */ color: oklch(42.1% 0.224 275.2);

Tailwind

colors: {
  custom: {
    50: '#8466d7',
    500: '#3728c3',
    950: '#000000',
  },
}

SCSS

$custom: #3728c3;
$custom-light: #8466d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3728c3",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 195
  },
  "hsl": {
    "h": 245.806,
    "s": 65.957,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42084,
    "c": 0.22376,
    "h": 275.2
  },
  "luminance": 0.0627
}

Semantic roles & 50–950 ramp

primary

#3728C3

secondary

#C6CE79

accent

#E93FD8

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0615

muted

#7D7A83

Preview Lab

Preview with #3728C3

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

Preview Lab → · Contrast checker → · Palette generator →