#3727AB#3727AB

#3727AB is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.4% C 0.197 H 277.8°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#3727AB
RGB	rgb(55, 39, 171)
HSL	hsl(247, 63%, 41%)
HSV	hsv(247, 77%, 67%)
CMYK	cmyk(67.8%, 77.2%, 0%, 32.9%)
CIE-LAB	lab(27.30, 46.59, -67.39)
CIE-LCH	lch(27.30, 81.93, 304.66°)
OKLab	oklab(39.38% 0.0267 -0.1947)
OKLCH	oklch(39.38% 0.197 277.8)
XYZ	xyz(9.6494, 5.2027, 39.0159)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3727AB #9BAB27

analogous

#2759AB #3727AB #7927AB

triadic

#3727AB #AB3727 #27AB37

tetradic

#3727AB #AB2759 #9BAB27 #27AB79

square

#3727AB #AB2759 #9BAB27 #27AB79

split-complementary

#3727AB #AB7927 #59AB27

monochromatic

#171047 #271C79 #3727AB #4F3DD3 #7C6EDE

Accessibility & contrast

On white

10.29

#3727AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#3727AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3727AB

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3727AB	#FFFFFF	#000000	##FFFFFF
##3727AB	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046AF

Deuteranopia (green-blind)

#003BA9

Tritanopia (blue-blind)

#004E68

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3727ab;
/* rgb */ color: rgb(55, 39, 171);
/* oklch */ color: oklch(39.4% 0.197 277.8);

Tailwind

colors: {
  custom: {
    50: '#7f64c5',
    500: '#3727ab',
    950: '#000000',
  },
}

SCSS

$custom: #3727ab;
$custom-light: #7f64c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3727ab",
  "rgb": {
    "r": 55,
    "g": 39,
    "b": 171
  },
  "hsl": {
    "h": 247.273,
    "s": 62.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39378,
    "c": 0.19652,
    "h": 277.8
  },
  "luminance": 0.05204
}

Semantic roles & 50–950 ramp

primary

#3727AB

secondary

#BAC569

accent

#E642D2

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3727AB

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

Preview Lab → · Contrast checker → · Palette generator →