#3729B8#3729B8

#3729B8 is a dark, highly saturated blue. Relative luminance 0.059; OKLCH L 41.0% C 0.210 H 276.2°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX#3729B8
RGBrgb(55, 41, 184)
HSLhsl(246, 64%, 44%)
HSVhsv(246, 78%, 72%)
CMYKcmyk(70.1%, 77.7%, 0%, 27.8%)
CIE-LABlab(29.05, 49.61, -72.28)
CIE-LCHlch(29.05, 87.66, 304.46°)
OKLaboklab(41.01% 0.0225 -0.2089)
OKLCHoklch(41.01% 0.21 276.2)
XYZxyz(11.0174, 5.8578, 45.8882)
Luminance0.0586 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3729B8 #AAB829
analogous
#2963B8 #3729B8 #7F29B8
triadic
#3729B8 #B83729 #29B837
tetradic
#3729B8 #B82963 #AAB829 #29B87F
square
#3729B8 #B82963 #AAB829 #29B87F
split-complementary
#3729B8 #B87F29 #63B829
monochromatic
#191354 #281E86 #3729B8 #5648D6 #847AE1

Accessibility & contrast

On white

9.67
#3729B8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.17
#3729B8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729B8
9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3729B8#FFFFFF#000000##FFFFFF
##3729B81.009.672.179.67
#FFFFFF9.671.0021.001.00
#0000002.1721.001.0021.00
##FFFFFF9.671.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004ABC
Deuteranopia (green-blind)
#003EB5
Tritanopia (blue-blind)
#005470
Achromatopsia (no color)
#444444

Design tokens & code

CSS
--color: #3729b8;
/* rgb */ color: rgb(55, 41, 184);
/* oklch */ color: oklch(41.0% 0.210 276.2);
Tailwind
colors: {
  custom: {
    50: '#8166cf',
    500: '#3729b8',
    950: '#000000',
  },
}
SCSS
$custom: #3729b8;
$custom-light: #8166cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3729b8",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 184
  },
  "hsl": {
    "h": 245.874,
    "s": 63.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.41013,
    "c": 0.21014,
    "h": 276.2
  },
  "luminance": 0.05859
}

Semantic roles & 50–950 ramp

primary
#3729B8
secondary
#C1C973
accent
#E741D6
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0614
muted
#7D7A82

Preview Lab

Preview with #3729B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3729B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva