#3729AC#3729AC

#3729AC is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.7% C 0.196 H 277.4°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#3729AC
RGB	rgb(55, 41, 172)
HSL	hsl(246, 62%, 42%)
HSV	hsv(246, 76%, 67%)
CMYK	cmyk(68%, 76.2%, 0%, 32.5%)
CIE-LAB	lab(27.78, 45.85, -67.21)
CIE-LCH	lch(27.78, 81.36, 304.30°)
OKLab	oklab(39.74% 0.0254 -0.1942)
OKLCH	oklch(39.74% 0.196 277.4)
XYZ	xyz(9.8125, 5.3758, 39.5423)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729AC #9EAC29

analogous

#295DAC #3729AC #7929AC

triadic

#3729AC #AC3729 #29AC37

tetradic

#3729AC #AC295D #9EAC29 #29AC79

square

#3729AC #AC295D #9EAC29 #29AC79

split-complementary

#3729AC #AC7929 #5DAC29

monochromatic

#171149 #271D7B #3729AC #5041D2 #7D72DD

Accessibility & contrast

On white

10.12

#3729AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#3729AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729AC

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729AC	#FFFFFF	#000000	##FFFFFF
##3729AC	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B0

Deuteranopia (green-blind)

#003CAA

Tritanopia (blue-blind)

#004F69

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3729ac;
/* rgb */ color: rgb(55, 41, 172);
/* oklch */ color: oklch(39.7% 0.196 277.4);

Tailwind

colors: {
  custom: {
    50: '#7f65c6',
    500: '#3729ac',
    950: '#000000',
  },
}

SCSS

$custom: #3729ac;
$custom-light: #7f65c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3729ac",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 172
  },
  "hsl": {
    "h": 246.412,
    "s": 61.502,
    "l": 41.765
  },
  "oklch": {
    "l": 0.39743,
    "c": 0.19583,
    "h": 277.4
  },
  "luminance": 0.05377
}

Semantic roles & 50–950 ramp

primary

#3729AC

secondary

#BBC56C

accent

#E543D3

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3729AC

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

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