#3721AD#3721AD

#3721AD is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.9% C 0.204 H 278.2°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX#3721AD
RGBrgb(55, 33, 173)
HSLhsl(249, 68%, 40%)
HSVhsv(249, 81%, 68%)
CMYKcmyk(68.2%, 80.9%, 0%, 32.2%)
CIE-LABlab(26.49, 50.17, -69.93)
CIE-LCHlch(26.49, 86.07, 305.65°)
OKLaboklab(38.88% 0.0292 -0.202)
OKLCHoklch(38.88% 0.204 278.2)
XYZxyz(9.6598, 4.9162, 39.9669)
Luminance0.0492 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3721AD #97AD21
analogous
#2151AD #3721AD #7D21AD
triadic
#3721AD #AD3721 #21AD37
tetradic
#3721AD #AD2151 #97AD21 #21AD7D
square
#3721AD #AD2151 #97AD21 #21AD7D
split-complementary
#3721AD #AD7D21 #51AD21
monochromatic
#160D46 #27177A #3721AD #4D33D8 #7A66E2

Accessibility & contrast

On white

10.59
#3721AD on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.98
#3721AD on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3721AD
10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3721AD#FFFFFF#000000##FFFFFF
##3721AD1.0010.591.9810.59
#FFFFFF10.591.0021.001.00
#0000001.9821.001.0021.00
##FFFFFF10.591.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0044B1
Deuteranopia (green-blind)
#0039AB
Tritanopia (blue-blind)
#004C68
Achromatopsia (no color)
#3F3F3F

Design tokens & code

CSS
--color: #3721ad;
/* rgb */ color: rgb(55, 33, 173);
/* oklch */ color: oklch(38.9% 0.204 278.2);
Tailwind
colors: {
  custom: {
    50: '#7f61c7',
    500: '#3721ad',
    950: '#000000',
  },
}
SCSS
$custom: #3721ad;
$custom-light: #7f61c7;
$custom-dark: #000000;
JSON
{
  "hex": "#3721ad",
  "rgb": {
    "r": 55,
    "g": 33,
    "b": 173
  },
  "hsl": {
    "h": 249.429,
    "s": 67.961,
    "l": 40.392
  },
  "oklch": {
    "l": 0.38878,
    "c": 0.20411,
    "h": 278.2
  },
  "luminance": 0.04917
}

Semantic roles & 50–950 ramp

primary
#3721AD
secondary
#B8C762
accent
#EB3DD0
background
#F8F5FC
surface
#F0EAF8
border
#CBC6D1
text
#0C0513
muted
#7D7982

Preview Lab

Preview with #3721AD

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

Preview Lab → · Contrast checker → · Palette generator →

#3721AD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva