#3773E0#3773E0

#3773E0 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.5% C 0.178 H 261.2°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX#3773E0
RGBrgb(55, 115, 224)
HSLhsl(219, 73%, 55%)
HSVhsv(219, 75%, 88%)
CMYKcmyk(75.4%, 48.7%, 0%, 12.2%)
CIE-LABlab(50.04, 18.36, -61.14)
CIE-LCHlch(50.04, 63.84, 286.71°)
OKLaboklab(57.54% -0.0273 -0.1757)
OKLCHoklch(57.54% 0.178 261.2)
XYZxyz(21.1560, 18.4531, 72.9534)
Luminance0.1846 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3773E0 #E0A437
analogous
#37C8E0 #3773E0 #4F37E0
triadic
#3773E0 #E03773 #73E037
tetradic
#3773E0 #E037C8 #E0A437 #37E04F
square
#3773E0 #E037C8 #E0A437 #37E04F
split-complementary
#3773E0 #E04F37 #C8E037
monochromatic
#153E88 #1D56BD #3773E0 #6C98E8 #A1BDF0

Accessibility & contrast

On white

4.48
#3773E0 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.69
#3773E0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3773E0
4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3773E0#FFFFFF#000000##000000
##3773E01.004.484.694.69
#FFFFFF4.481.0021.0021.00
#0000004.6921.001.001.00
##0000004.6921.001.001.00

Color blindness preview

Protanopia (red-blind)
#337FE4
Deuteranopia (green-blind)
#0070DE
Tritanopia (blue-blind)
#008D9F
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3773e0;
/* rgb */ color: rgb(55, 115, 224);
/* oklch */ color: oklch(57.5% 0.178 261.2);
Tailwind
colors: {
  custom: {
    50: '#859aea',
    500: '#3773e0',
    950: '#000000',
  },
}
SCSS
$custom: #3773e0;
$custom-light: #859aea;
$custom-dark: #000000;
JSON
{
  "hex": "#3773e0",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 224
  },
  "hsl": {
    "h": 218.698,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.57538,
    "c": 0.17786,
    "h": 261.2
  },
  "luminance": 0.18456
}

Semantic roles & 50–950 ramp

primary
#3773E0
secondary
#DDC496
accent
#AF38F0
background
#F8F9FE
surface
#F0F2FD
border
#CBCCD5
text
#0D0E16
muted
#7D7E84

Preview Lab

Preview with #3773E0

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

Preview Lab → · Contrast checker → · Palette generator →

#3773E0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva