#3729A7#3729A7

#3729A7 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.2% C 0.190 H 278.0°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX#3729A7
RGBrgb(55, 41, 167)
HSLhsl(247, 61%, 41%)
HSVhsv(247, 75%, 65%)
CMYKcmyk(67.1%, 75.4%, 0%, 34.5%)
CIE-LABlab(27.26, 44.27, -65.05)
CIE-LCHlch(27.26, 78.69, 304.24°)
OKLaboklab(39.22% 0.0266 -0.1879)
OKLCHoklch(39.22% 0.19 278)
XYZxyz(9.3413, 5.1873, 37.0607)
Luminance0.0519 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3729A7 #99A729
analogous
#295AA7 #3729A7 #7629A7
triadic
#3729A7 #A73729 #29A737
tetradic
#3729A7 #A7295A #99A729 #29A776
square
#3729A7 #A7295A #99A729 #29A776
split-complementary
#3729A7 #A77629 #5AA729
monochromatic
#171145 #271D76 #3729A7 #4E3ED0 #7B6FDC

Accessibility & contrast

On white

10.31
#3729A7 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.04
#3729A7 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729A7
10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3729A7#FFFFFF#000000##FFFFFF
##3729A71.0010.312.0410.31
#FFFFFF10.311.0021.001.00
#0000002.0421.001.0021.00
##FFFFFF10.311.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0045AB
Deuteranopia (green-blind)
#003BA5
Tritanopia (blue-blind)
#004D66
Achromatopsia (no color)
#404040

Design tokens & code

CSS
--color: #3729a7;
/* rgb */ color: rgb(55, 41, 167);
/* oklch */ color: oklch(39.2% 0.190 278.0);
Tailwind
colors: {
  custom: {
    50: '#7e65c2',
    500: '#3729a7',
    950: '#000000',
  },
}
SCSS
$custom: #3729a7;
$custom-light: #7e65c2;
$custom-dark: #000000;
JSON
{
  "hex": "#3729a7",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 167
  },
  "hsl": {
    "h": 246.667,
    "s": 60.577,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39224,
    "c": 0.18976,
    "h": 278
  },
  "luminance": 0.05188
}

Semantic roles & 50–950 ramp

primary
#3729A7
secondary
#B9C269
accent
#E444D2
background
#F8F6FC
surface
#EFEBF8
border
#CAC6D1
text
#0B0613
muted
#7C7A82

Preview Lab

Preview with #3729A7

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

Preview Lab → · Contrast checker → · Palette generator →

#3729A7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva