#3729BC#3729BC

#3729BC is a dark, highly saturated blue. Relative luminance 0.060; OKLCH L 41.4% C 0.215 H 275.8°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX#3729BC
RGBrgb(55, 41, 188)
HSLhsl(246, 64%, 45%)
HSVhsv(246, 78%, 74%)
CMYKcmyk(70.7%, 78.2%, 0%, 26.3%)
CIE-LABlab(29.48, 50.84, -73.93)
CIE-LCHlch(29.48, 89.73, 304.52°)
OKLaboklab(41.44% 0.0216 -0.2137)
OKLCHoklch(41.44% 0.215 275.8)
XYZxyz(11.4426, 6.0279, 48.1277)
Luminance0.0603 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3729BC #AEBC29
analogous
#2965BC #3729BC #8029BC
triadic
#3729BC #BC3729 #29BC37
tetradic
#3729BC #BC2965 #AEBC29 #29BC80
square
#3729BC #BC2965 #AEBC29 #29BC80
split-complementary
#3729BC #BC8029 #65BC29
monochromatic
#1A1358 #281E8A #3729BC #584BD8 #867DE3

Accessibility & contrast

On white

9.52
#3729BC on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.21
#3729BC on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729BC
9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3729BC#FFFFFF#000000##FFFFFF
##3729BC1.009.522.219.52
#FFFFFF9.521.0021.001.00
#0000002.2121.001.0021.00
##FFFFFF9.521.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004CC0
Deuteranopia (green-blind)
#003FB9
Tritanopia (blue-blind)
#005572
Achromatopsia (no color)
#454545

Design tokens & code

CSS
--color: #3729bc;
/* rgb */ color: rgb(55, 41, 188);
/* oklch */ color: oklch(41.4% 0.215 275.8);
Tailwind
colors: {
  custom: {
    50: '#8266d2',
    500: '#3729bc',
    950: '#000000',
  },
}
SCSS
$custom: #3729bc;
$custom-light: #8266d2;
$custom-dark: #000000;
JSON
{
  "hex": "#3729bc",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 188
  },
  "hsl": {
    "h": 245.714,
    "s": 64.192,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41442,
    "c": 0.21482,
    "h": 275.8
  },
  "luminance": 0.06029
}

Semantic roles & 50–950 ramp

primary
#3729BC
secondary
#C3CB76
accent
#E741D7
background
#F8F6FD
surface
#F0EBFA
border
#CBC6D3
text
#0C0614
muted
#7D7A83

Preview Lab

Preview with #3729BC

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

Preview Lab → · Contrast checker → · Palette generator →

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