#3729AF#3729AF

#3729AF is a dark, vivid blue. Relative luminance 0.055; OKLCH L 40.1% C 0.199 H 277.1°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#3729AF
RGB	rgb(55, 41, 175)
HSL	hsl(246, 62%, 42%)
HSV	hsv(246, 77%, 69%)
CMYK	cmyk(68.6%, 76.6%, 0%, 31.4%)
CIE-LAB	lab(28.09, 46.80, -68.49)
CIE-LCH	lch(28.09, 82.95, 304.34°)
OKLab	oklab(40.06% 0.0247 -0.1979)
OKLCH	oklch(40.06% 0.199 277.1)
XYZ	xyz(10.1038, 5.4923, 41.0768)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729AF #A1AF29

analogous

#295EAF #3729AF #7A29AF

triadic

#3729AF #AF3729 #29AF37

tetradic

#3729AF #AF295E #A1AF29 #29AF7A

square

#3729AF #AF295E #A1AF29 #29AF7A

split-complementary

#3729AF #AF7A29 #5EAF29

monochromatic

#18124C #271D7D #3729AF #5142D3 #7F74DE

Accessibility & contrast

On white

10.01

#3729AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3729AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729AF

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729AF	#FFFFFF	#000000	##FFFFFF
##3729AF	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B3

Deuteranopia (green-blind)

#003DAD

Tritanopia (blue-blind)

#00506B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3729af;
/* rgb */ color: rgb(55, 41, 175);
/* oklch */ color: oklch(40.1% 0.199 277.1);

Tailwind

colors: {
  custom: {
    50: '#7f66c8',
    500: '#3729af',
    950: '#000000',
  },
}

SCSS

$custom: #3729af;
$custom-light: #7f66c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3729af",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 175
  },
  "hsl": {
    "h": 246.269,
    "s": 62.037,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40058,
    "c": 0.19944,
    "h": 277.1
  },
  "luminance": 0.05493
}

Semantic roles & 50–950 ramp

primary

#3729AF

secondary

#BDC66E

accent

#E543D4

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3729AF

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

Preview Lab → · Contrast checker → · Palette generator →