#3729AD#3729AD

#3729AD is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.8% C 0.197 H 277.3°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#3729AD
RGB	rgb(55, 41, 173)
HSL	hsl(246, 62%, 42%)
HSV	hsv(246, 76%, 68%)
CMYK	cmyk(68.2%, 76.3%, 0%, 32.2%)
CIE-LAB	lab(27.88, 46.17, -67.64)
CIE-LCH	lch(27.88, 81.89, 304.32°)
OKLab	oklab(39.85% 0.0252 -0.1954)
OKLCH	oklch(39.85% 0.197 277.3)
XYZ	xyz(9.9089, 5.4144, 40.0499)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729AD #9FAD29

analogous

#295DAD #3729AD #7929AD

triadic

#3729AD #AD3729 #29AD37

tetradic

#3729AD #AD295D #9FAD29 #29AD79

square

#3729AD #AD295D #9FAD29 #29AD79

split-complementary

#3729AD #AD7929 #5DAD29

monochromatic

#18124A #271D7C #3729AD #5141D2 #7E73DE

Accessibility & contrast

On white

10.08

#3729AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3729AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729AD

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729AD	#FFFFFF	#000000	##FFFFFF
##3729AD	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B1

Deuteranopia (green-blind)

#003CAB

Tritanopia (blue-blind)

#005069

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3729ad;
/* rgb */ color: rgb(55, 41, 173);
/* oklch */ color: oklch(39.8% 0.197 277.3);

Tailwind

colors: {
  custom: {
    50: '#7f66c7',
    500: '#3729ad',
    950: '#000000',
  },
}

SCSS

$custom: #3729ad;
$custom-light: #7f66c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3729ad",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 173
  },
  "hsl": {
    "h": 246.364,
    "s": 61.682,
    "l": 41.961
  },
  "oklch": {
    "l": 0.39848,
    "c": 0.19704,
    "h": 277.3
  },
  "luminance": 0.05415
}

Semantic roles & 50–950 ramp

primary

#3729AD

secondary

#BCC56D

accent

#E543D4

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3729AD

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

Preview Lab → · Contrast checker → · Palette generator →