#3728AC#3728AC

#3728AC is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.6% C 0.197 H 277.6°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX#3728AC
RGBrgb(55, 40, 172)
HSLhsl(247, 62%, 42%)
HSVhsv(247, 77%, 67%)
CMYKcmyk(68%, 76.7%, 0%, 32.5%)
CIE-LABlab(27.59, 46.38, -67.52)
CIE-LCHlch(27.59, 81.91, 304.49°)
OKLaboklab(39.61% 0.026 -0.1951)
OKLCHoklch(39.61% 0.197 277.6)
XYZxyz(9.7783, 5.3075, 39.5309)
Luminance0.0531 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3728AC #9DAC28
analogous
#285BAC #3728AC #7928AC
triadic
#3728AC #AC3728 #28AC37
tetradic
#3728AC #AC285B #9DAC28 #28AC79
square
#3728AC #AC285B #9DAC28 #28AC79
split-complementary
#3728AC #AC7928 #5BAC28
monochromatic
#171149 #271C7A #3728AC #503FD2 #7D71DE

Accessibility & contrast

On white

10.19
#3728AC on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.06
#3728AC on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3728AC
10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3728AC#FFFFFF#000000##FFFFFF
##3728AC1.0010.192.0610.19
#FFFFFF10.191.0021.001.00
#0000002.0621.001.0021.00
##FFFFFF10.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0046B0
Deuteranopia (green-blind)
#003CAA
Tritanopia (blue-blind)
#004F69
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #3728ac;
/* rgb */ color: rgb(55, 40, 172);
/* oklch */ color: oklch(39.6% 0.197 277.6);
Tailwind
colors: {
  custom: {
    50: '#7f65c6',
    500: '#3728ac',
    950: '#000000',
  },
}
SCSS
$custom: #3728ac;
$custom-light: #7f65c6;
$custom-dark: #000000;
JSON
{
  "hex": "#3728ac",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 172
  },
  "hsl": {
    "h": 246.818,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39612,
    "c": 0.19679,
    "h": 277.6
  },
  "luminance": 0.05308
}

Semantic roles & 50–950 ramp

primary
#3728AC
secondary
#BBC56B
accent
#E542D3
background
#F8F6FC
surface
#F0EBF8
border
#CBC6D1
text
#0B0613
muted
#7C7A82

Preview Lab

Preview with #3728AC

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

Preview Lab → · Contrast checker → · Palette generator →

#3728AC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva