#3729A6#3729A6

#3729A6 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.1% C 0.189 H 278.2°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#3729A6
RGB	rgb(55, 41, 166)
HSL	hsl(247, 60%, 41%)
HSV	hsv(247, 75%, 65%)
CMYK	cmyk(66.9%, 75.3%, 0%, 34.9%)
CIE-LAB	lab(27.16, 43.95, -64.62)
CIE-LCH	lch(27.16, 78.15, 304.22°)
OKLab	oklab(39.12% 0.0268 -0.1866)
OKLCH	oklch(39.12% 0.189 278.2)
XYZ	xyz(9.2492, 5.1505, 36.5757)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729A6 #98A629

analogous

#2959A6 #3729A6 #7529A6

triadic

#3729A6 #A63729 #29A637

tetradic

#3729A6 #A62959 #98A629 #29A675

square

#3729A6 #A62959 #98A629 #29A675

split-complementary

#3729A6 #A67529 #59A629

monochromatic

#161144 #271D75 #3729A6 #4D3DCF #7A6EDB

Accessibility & contrast

On white

10.34

#3729A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#3729A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729A6

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729A6	#FFFFFF	#000000	##FFFFFF
##3729A6	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045AA

Deuteranopia (green-blind)

#003BA4

Tritanopia (blue-blind)

#004D65

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3729a6;
/* rgb */ color: rgb(55, 41, 166);
/* oklch */ color: oklch(39.1% 0.189 278.2);

Tailwind

colors: {
  custom: {
    50: '#7d65c2',
    500: '#3729a6',
    950: '#000000',
  },
}

SCSS

$custom: #3729a6;
$custom-light: #7d65c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3729a6",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 166
  },
  "hsl": {
    "h": 246.72,
    "s": 60.386,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39121,
    "c": 0.18853,
    "h": 278.2
  },
  "luminance": 0.05151
}

Semantic roles & 50–950 ramp

primary

#3729A6

secondary

#B8C269

accent

#E444D2

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3729A6

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

Preview Lab → · Contrast checker → · Palette generator →