#3729AA#3729AA

#3729AA is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.5% C 0.193 H 277.7°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#3729AA
RGB	rgb(55, 41, 170)
HSL	hsl(247, 61%, 41%)
HSV	hsv(247, 76%, 67%)
CMYK	cmyk(67.6%, 75.9%, 0%, 33.3%)
CIE-LAB	lab(27.57, 45.22, -66.35)
CIE-LCH	lch(27.57, 80.29, 304.28°)
OKLab	oklab(39.53% 0.0259 -0.1917)
OKLCH	oklch(39.53% 0.193 277.7)
XYZ	xyz(9.6218, 5.2995, 38.5383)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729AA #9CAA29

analogous

#295CAA #3729AA #7829AA

triadic

#3729AA #AA3729 #29AA37

tetradic

#3729AA #AA295C #9CAA29 #29AA78

square

#3729AA #AA295C #9CAA29 #29AA78

split-complementary

#3729AA #AA7829 #5CAA29

monochromatic

#171147 #271D79 #3729AA #4F3FD1 #7C71DD

Accessibility & contrast

On white

10.19

#3729AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#3729AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729AA

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729AA	#FFFFFF	#000000	##FFFFFF
##3729AA	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046AE

Deuteranopia (green-blind)

#003CA8

Tritanopia (blue-blind)

#004E68

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3729aa;
/* rgb */ color: rgb(55, 41, 170);
/* oklch */ color: oklch(39.5% 0.193 277.7);

Tailwind

colors: {
  custom: {
    50: '#7e65c5',
    500: '#3729aa',
    950: '#000000',
  },
}

SCSS

$custom: #3729aa;
$custom-light: #7e65c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3729aa",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 170
  },
  "hsl": {
    "h": 246.512,
    "s": 61.137,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39535,
    "c": 0.19341,
    "h": 277.7
  },
  "luminance": 0.053
}

Semantic roles & 50–950 ramp

primary

#3729AA

secondary

#BAC46B

accent

#E444D3

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3729AA

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

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