#3663D4#3663D4

#3663D4 is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.3% C 0.181 H 264.6°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX#3663D4
RGBrgb(54, 99, 212)
HSLhsl(223, 65%, 52%)
HSVhsv(223, 75%, 83%)
CMYKcmyk(74.5%, 53.3%, 0%, 16.9%)
CIE-LABlab(44.88, 23.97, -62.67)
CIE-LCHlch(44.88, 67.09, 290.93°)
OKLaboklab(53.34% -0.0171 -0.1805)
OKLCHoklch(53.34% 0.181 264.6)
XYZxyz(17.8626, 14.4594, 64.1241)
Luminance0.1446 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3663D4 #D4A736
analogous
#36B2D4 #3663D4 #5836D4
triadic
#3663D4 #D43663 #63D436
tetradic
#3663D4 #D436B2 #D4A736 #36D458
square
#3663D4 #D436B2 #D4A736 #36D458
split-complementary
#3663D4 #D45836 #B2D436
monochromatic
#193476 #244AA9 #3663D4 #688ADF #9BB1EA

Accessibility & contrast

On white

5.40
#3663D4 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.89
#3663D4 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663D4
5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3663D4#FFFFFF#000000##FFFFFF
##3663D41.005.403.895.40
#FFFFFF5.401.0021.001.00
#0000003.8921.001.0021.00
##FFFFFF5.401.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0772D8
Deuteranopia (green-blind)
#0063D2
Tritanopia (blue-blind)
#007E92
Achromatopsia (no color)
#6A6A6A

Design tokens & code

CSS
--color: #3663d4;
/* rgb */ color: rgb(54, 99, 212);
/* oklch */ color: oklch(53.3% 0.181 264.6);
Tailwind
colors: {
  custom: {
    50: '#838ee2',
    500: '#3663d4',
    950: '#000000',
  },
}
SCSS
$custom: #3663d4;
$custom-light: #838ee2;
$custom-dark: #000000;
JSON
{
  "hex": "#3663d4",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 212
  },
  "hsl": {
    "h": 222.911,
    "s": 64.754,
    "l": 52.157
  },
  "oklch": {
    "l": 0.53343,
    "c": 0.18133,
    "h": 264.6
  },
  "luminance": 0.14461
}

Semantic roles & 50–950 ramp

primary
#3663D4
secondary
#D5C290
accent
#B840E8
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83

Preview Lab

Preview with #3663D4

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

Preview Lab → · Contrast checker → · Palette generator →

#3663D4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva