#3727B1#3727B1

#3727B1 is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 40.0% C 0.204 H 277.1°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX#3727B1
RGBrgb(55, 39, 177)
HSLhsl(247, 64%, 42%)
HSVhsv(247, 78%, 69%)
CMYKcmyk(68.9%, 78%, 0%, 30.6%)
CIE-LABlab(27.94, 48.46, -69.93)
CIE-LCHlch(27.94, 85.08, 304.72°)
OKLaboklab(40.02% 0.0252 -0.2021)
OKLCHoklch(40.02% 0.204 277.1)
XYZxyz(10.2343, 5.4367, 42.0965)
Luminance0.0544 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3727B1 #A1B127
analogous
#275CB1 #3727B1 #7C27B1
triadic
#3727B1 #B13727 #27B137
tetradic
#3727B1 #B1275C #A1B127 #27B17C
square
#3727B1 #B1275C #A1B127 #27B17C
split-complementary
#3727B1 #B17C27 #5CB127
monochromatic
#18114D #271C7F #3727B1 #5140D5 #7F72E0

Accessibility & contrast

On white

10.06
#3727B1 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.09
#3727B1 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3727B1
10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3727B1#FFFFFF#000000##FFFFFF
##3727B11.0010.062.0910.06
#FFFFFF10.061.0021.001.00
#0000002.0921.001.0021.00
##FFFFFF10.061.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0048B5
Deuteranopia (green-blind)
#003CAF
Tritanopia (blue-blind)
#00506B
Achromatopsia (no color)
#424242

Design tokens & code

CSS
--color: #3727b1;
/* rgb */ color: rgb(55, 39, 177);
/* oklch */ color: oklch(40.0% 0.204 277.1);
Tailwind
colors: {
  custom: {
    50: '#8065ca',
    500: '#3727b1',
    950: '#000000',
  },
}
SCSS
$custom: #3727b1;
$custom-light: #8065ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3727b1",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 177
  },
  "hsl": {
    "h": 246.957,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40016,
    "c": 0.20366,
    "h": 277.1
  },
  "luminance": 0.05438
}

Semantic roles & 50–950 ramp

primary
#3727B1
secondary
#BDC76D
accent
#E741D4
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0613
muted
#7D7A82

Preview Lab

Preview with #3727B1

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

Preview Lab → · Contrast checker → · Palette generator →

#3727B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva