#3729B9#3729B9

#3729B9 is a dark, highly saturated blue. Relative luminance 0.059; OKLCH L 41.1% C 0.211 H 276.1°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX#3729B9
RGBrgb(55, 41, 185)
HSLhsl(246, 64%, 44%)
HSVhsv(246, 78%, 73%)
CMYKcmyk(70.3%, 77.8%, 0%, 27.5%)
CIE-LABlab(29.16, 49.92, -72.69)
CIE-LCHlch(29.16, 88.18, 304.48°)
OKLaboklab(41.12% 0.0223 -0.2101)
OKLCHoklch(41.12% 0.211 276.1)
XYZxyz(11.1226, 5.8998, 46.4422)
Luminance0.0590 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3729B9 #ABB929
analogous
#2963B9 #3729B9 #7F29B9
triadic
#3729B9 #B93729 #29B937
tetradic
#3729B9 #B92963 #ABB929 #29B97F
square
#3729B9 #B92963 #ABB929 #29B97F
split-complementary
#3729B9 #B97F29 #63B929
monochromatic
#191355 #281E87 #3729B9 #5649D7 #857BE2

Accessibility & contrast

On white

9.63
#3729B9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.18
#3729B9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729B9
9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3729B9#FFFFFF#000000##FFFFFF
##3729B91.009.632.189.63
#FFFFFF9.631.0021.001.00
#0000002.1821.001.0021.00
##FFFFFF9.631.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004BBD
Deuteranopia (green-blind)
#003EB6
Tritanopia (blue-blind)
#005470
Achromatopsia (no color)
#454545

Design tokens & code

CSS
--color: #3729b9;
/* rgb */ color: rgb(55, 41, 185);
/* oklch */ color: oklch(41.1% 0.211 276.1);
Tailwind
colors: {
  custom: {
    50: '#8166cf',
    500: '#3729b9',
    950: '#000000',
  },
}
SCSS
$custom: #3729b9;
$custom-light: #8166cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3729b9",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 185
  },
  "hsl": {
    "h": 245.833,
    "s": 63.717,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4112,
    "c": 0.21132,
    "h": 276.1
  },
  "luminance": 0.05901
}

Semantic roles & 50–950 ramp

primary
#3729B9
secondary
#C1CA74
accent
#E741D7
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0614
muted
#7D7A82

Preview Lab

Preview with #3729B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3729B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva