#3721AC#3721AC

#3721AC is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.8% C 0.203 H 278.4°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX#3721AC
RGBrgb(55, 33, 172)
HSLhsl(249, 68%, 40%)
HSVhsv(249, 81%, 67%)
CMYKcmyk(68%, 80.8%, 0%, 32.5%)
CIE-LABlab(26.38, 49.87, -69.52)
CIE-LCHlch(26.38, 85.55, 305.65°)
OKLaboklab(38.77% 0.0295 -0.2008)
OKLCHoklch(38.77% 0.203 278.4)
XYZxyz(9.5634, 4.8777, 39.4592)
Luminance0.0488 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3721AC #96AC21
analogous
#2151AC #3721AC #7C21AC
triadic
#3721AC #AC3721 #21AC37
tetradic
#3721AC #AC2151 #96AC21 #21AC7C
square
#3721AC #AC2151 #96AC21 #21AC7C
split-complementary
#3721AC #AC7C21 #51AC21
monochromatic
#160D45 #271779 #3721AC #4D32D8 #7966E2

Accessibility & contrast

On white

10.63
#3721AC on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

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

Best text color

#FFFFFF on #3721AC
10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3721AC#FFFFFF#000000##FFFFFF
##3721AC1.0010.631.9810.63
#FFFFFF10.631.0021.001.00
#0000001.9821.001.0021.00
##FFFFFF10.631.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0044B0
Deuteranopia (green-blind)
#0039AA
Tritanopia (blue-blind)
#004C67
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #3721ac;
/* rgb */ color: rgb(55, 33, 172);
/* oklch */ color: oklch(38.8% 0.203 278.4);
Tailwind
colors: {
  custom: {
    50: '#7f61c6',
    500: '#3721ac',
    950: '#000000',
  },
}
SCSS
$custom: #3721ac;
$custom-light: #7f61c6;
$custom-dark: #000000;
JSON
{
  "hex": "#3721ac",
  "rgb": {
    "r": 55,
    "g": 33,
    "b": 172
  },
  "hsl": {
    "h": 249.496,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.38768,
    "c": 0.20295,
    "h": 278.4
  },
  "luminance": 0.04878
}

Semantic roles & 50–950 ramp

primary
#3721AC
secondary
#B7C762
accent
#EB3DCF
background
#F8F5FC
surface
#F0EAF8
border
#CBC6D1
text
#0C0513
muted
#7D7982

Preview Lab

Preview with #3721AC

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

Preview Lab → · Contrast checker → · Palette generator →

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