#3663D0#3663D0

#3663D0 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.0% C 0.176 H 264.3°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX#3663D0
RGBrgb(54, 99, 208)
HSLhsl(222, 62%, 51%)
HSVhsv(222, 74%, 82%)
CMYKcmyk(74%, 52.4%, 0%, 18.4%)
CIE-LABlab(44.60, 22.49, -60.83)
CIE-LCHlch(44.60, 64.86, 290.29°)
OKLaboklab(53.04% -0.0175 -0.1751)
OKLCHoklch(53.04% 0.176 264.3)
XYZxyz(17.3643, 14.2601, 61.4996)
Luminance0.1426 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3663D0 #D0A336
analogous
#36B0D0 #3663D0 #5636D0
triadic
#3663D0 #D03663 #63D036
tetradic
#3663D0 #D036B0 #D0A336 #36D056
square
#3663D0 #D036B0 #D0A336 #36D056
split-complementary
#3663D0 #D05636 #B0D036
monochromatic
#1A3471 #264AA3 #3663D0 #6889DC #99B0E7

Accessibility & contrast

On white

5.45
#3663D0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.85
#3663D0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663D0
5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3663D0#FFFFFF#000000##FFFFFF
##3663D01.005.453.855.45
#FFFFFF5.451.0021.001.00
#0000003.8521.001.0021.00
##FFFFFF5.451.0021.001.00

Color blindness preview

Protanopia (red-blind)
#1571D4
Deuteranopia (green-blind)
#0063CE
Tritanopia (blue-blind)
#007D90
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #3663d0;
/* rgb */ color: rgb(54, 99, 208);
/* oklch */ color: oklch(53.0% 0.176 264.3);
Tailwind
colors: {
  custom: {
    50: '#828edf',
    500: '#3663d0',
    950: '#000000',
  },
}
SCSS
$custom: #3663d0;
$custom-light: #828edf;
$custom-dark: #000000;
JSON
{
  "hex": "#3663d0",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 208
  },
  "hsl": {
    "h": 222.468,
    "s": 62.097,
    "l": 51.373
  },
  "oklch": {
    "l": 0.53041,
    "c": 0.176,
    "h": 264.3
  },
  "luminance": 0.14262
}

Semantic roles & 50–950 ramp

primary
#3663D0
secondary
#D3BF8F
accent
#B643E5
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83

Preview Lab

Preview with #3663D0

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

Preview Lab → · Contrast checker → · Palette generator →

#3663D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva