#3729C5#3729C5

#3729C5 is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.4% C 0.225 H 274.9°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#3729C5
RGB	rgb(55, 41, 197)
HSL	hsl(245, 66%, 47%)
HSV	hsv(245, 79%, 77%)
CMYK	cmyk(72.1%, 79.2%, 0%, 22.7%)
CIE-LAB	lab(30.47, 53.59, -77.60)
CIE-LCH	lch(30.47, 94.31, 304.63°)
OKLab	oklab(42.42% 0.0193 -0.2244)
OKLCH	oklch(42.42% 0.225 274.9)
XYZ	xyz(12.4432, 6.4281, 53.3975)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729C5 #B7C529

analogous

#2969C5 #3729C5 #8529C5

triadic

#3729C5 #C53729 #29C537

tetradic

#3729C5 #C52969 #B7C529 #29C585

square

#3729C5 #C52969 #B7C529 #29C585

split-complementary

#3729C5 #C58529 #69C529

monochromatic

#1B1460 #291E92 #3729C5 #5D51DB #8C83E5

Accessibility & contrast

On white

9.19

#3729C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3729C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729C5

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729C5	#FFFFFF	#000000	##FFFFFF
##3729C5	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC9

Deuteranopia (green-blind)

#0041C2

Tritanopia (blue-blind)

#005977

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3729c5;
/* rgb */ color: rgb(55, 41, 197);
/* oklch */ color: oklch(42.4% 0.225 274.9);

Tailwind

colors: {
  custom: {
    50: '#8467d8',
    500: '#3729c5',
    950: '#000000',
  },
}

SCSS

$custom: #3729c5;
$custom-light: #8467d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3729c5",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 197
  },
  "hsl": {
    "h": 245.385,
    "s": 65.546,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42419,
    "c": 0.22524,
    "h": 274.9
  },
  "luminance": 0.06429
}

Semantic roles & 50–950 ramp

primary

#3729C5

secondary

#C7CE7C

accent

#E83FD9

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0615

muted

#7E7A83

Preview Lab

Preview with #3729C5

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

Preview Lab → · Contrast checker → · Palette generator →