#3723B1#3723B1

#3723B1 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.5% C 0.207 H 277.5°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX#3723B1
RGBrgb(55, 35, 177)
HSLhsl(248, 67%, 42%)
HSVhsv(248, 80%, 69%)
CMYKcmyk(68.9%, 80.2%, 0%, 30.6%)
CIE-LABlab(27.26, 50.43, -71.06)
CIE-LCHlch(27.26, 87.13, 305.36°)
OKLaboklab(39.54% 0.0271 -0.2053)
OKLCHoklch(39.54% 0.207 277.5)
XYZxyz(10.1098, 5.1877, 42.0550)
Luminance0.0519 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3723B1 #9DB123
analogous
#2356B1 #3723B1 #7E23B1
triadic
#3723B1 #B13723 #23B137
tetradic
#3723B1 #B12356 #9DB123 #23B17E
square
#3723B1 #B12356 #9DB123 #23B17E
split-complementary
#3723B1 #B17E23 #56B123
monochromatic
#170F4B #27197E #3723B1 #5039D8 #7D6CE2

Accessibility & contrast

On white

10.31
#3723B1 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.04
#3723B1 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3723B1
10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3723B1#FFFFFF#000000##FFFFFF
##3723B11.0010.312.0410.31
#FFFFFF10.311.0021.001.00
#0000002.0421.001.0021.00
##FFFFFF10.311.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0046B5
Deuteranopia (green-blind)
#003AAF
Tritanopia (blue-blind)
#004F6A
Achromatopsia (no color)
#404040

Design tokens & code

CSS
--color: #3723b1;
/* rgb */ color: rgb(55, 35, 177);
/* oklch */ color: oklch(39.5% 0.207 277.5);
Tailwind
colors: {
  custom: {
    50: '#8062ca',
    500: '#3723b1',
    950: '#000000',
  },
}
SCSS
$custom: #3723b1;
$custom-light: #8062ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3723b1",
  "rgb": {
    "r": 55,
    "g": 35,
    "b": 177
  },
  "hsl": {
    "h": 248.451,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39541,
    "c": 0.2071,
    "h": 277.5
  },
  "luminance": 0.05189
}

Semantic roles & 50–950 ramp

primary
#3723B1
secondary
#BBC868
accent
#EA3ED2
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0513
muted
#7D7A82

Preview Lab

Preview with #3723B1

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

Preview Lab → · Contrast checker → · Palette generator →

#3723B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva