#3733BD#3733BD

#3733BD is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 42.9% C 0.207 H 274.6°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX#3733BD
RGBrgb(55, 51, 189)
HSLhsl(242, 58%, 47%)
HSVhsv(242, 73%, 74%)
CMYKcmyk(70.9%, 73%, 0%, 25.9%)
CIE-LABlab(31.47, 45.82, -71.24)
CIE-LCHlch(31.47, 84.70, 302.75°)
OKLaboklab(42.88% 0.0164 -0.206)
OKLCHoklch(42.88% 0.207 274.6)
XYZxyz(11.9416, 6.8528, 48.8276)
Luminance0.0685 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3733BD #B9BD33
analogous
#3374BD #3733BD #7C33BD
triadic
#3733BD #BD3733 #33BD37
tetradic
#3733BD #BD3374 #B9BD33 #33BD7C
square
#3733BD #BD3374 #B9BD33 #33BD7C
split-complementary
#3733BD #BD7C33 #74BD33
monochromatic
#1B195D #29268D #3733BD #5E5BD3 #8D8BE0

Accessibility & contrast

On white

8.86
#3733BD on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.37
#3733BD on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733BD
8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3733BD#FFFFFF#000000##FFFFFF
##3733BD1.008.862.378.86
#FFFFFF8.861.0021.001.00
#0000002.3721.001.0021.00
##FFFFFF8.861.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0050C1
Deuteranopia (green-blind)
#0044BB
Tritanopia (blue-blind)
#005A75
Achromatopsia (no color)
#4A4A4A

Design tokens & code

CSS
--color: #3733bd;
/* rgb */ color: rgb(55, 51, 189);
/* oklch */ color: oklch(42.9% 0.207 274.6);
Tailwind
colors: {
  custom: {
    50: '#816cd2',
    500: '#3733bd',
    950: '#000000',
  },
}
SCSS
$custom: #3733bd;
$custom-light: #816cd2;
$custom-dark: #000000;
JSON
{
  "hex": "#3733bd",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 189
  },
  "hsl": {
    "h": 241.739,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.42875,
    "c": 0.20665,
    "h": 274.6
  },
  "luminance": 0.06854
}

Semantic roles & 50–950 ramp

primary
#3733BD
secondary
#C8CA82
accent
#E147DC
background
#F8F6FD
surface
#F0EBFA
border
#CBC6D3
text
#0C0714
muted
#7D7A83

Preview Lab

Preview with #3733BD

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

Preview Lab → · Contrast checker → · Palette generator →

#3733BD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva