#3660CC#3660CC

#3660CC is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.1% C 0.174 H 264.9°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX#3660CC
RGBrgb(54, 96, 204)
HSLhsl(223, 60%, 51%)
HSVhsv(223, 74%, 80%)
CMYKcmyk(73.5%, 52.9%, 0%, 20%)
CIE-LABlab(43.52, 22.94, -60.29)
CIE-LCHlch(43.52, 64.51, 290.83°)
OKLaboklab(52.13% -0.0155 -0.1736)
OKLCHoklch(52.13% 0.174 264.9)
XYZxyz(16.5994, 13.5078, 58.8475)
Luminance0.1351 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3660CC #CCA236
analogous
#36ABCC #3660CC #5736CC
triadic
#3660CC #CC3660 #60CC36
tetradic
#3660CC #CC36AB #CCA236 #36CC57
square
#3660CC #CC36AB #CCA236 #36CC57
split-complementary
#3660CC #CC5736 #ABCC36
monochromatic
#1B326C #28499D #3660CC #6787D8 #98ADE5

Accessibility & contrast

On white

5.67
#3660CC on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.70
#3660CC on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660CC
5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3660CC#FFFFFF#000000##FFFFFF
##3660CC1.005.673.705.67
#FFFFFF5.671.0021.001.00
#0000003.7021.001.0021.00
##FFFFFF5.671.0021.001.00

Color blindness preview

Protanopia (red-blind)
#106ED0
Deuteranopia (green-blind)
#0060CA
Tritanopia (blue-blind)
#007A8D
Achromatopsia (no color)
#676767

Design tokens & code

CSS
--color: #3660cc;
/* rgb */ color: rgb(54, 96, 204);
/* oklch */ color: oklch(52.1% 0.174 264.9);
Tailwind
colors: {
  custom: {
    50: '#818cdc',
    500: '#3660cc',
    950: '#000000',
  },
}
SCSS
$custom: #3660cc;
$custom-light: #818cdc;
$custom-dark: #000000;
JSON
{
  "hex": "#3660cc",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 204
  },
  "hsl": {
    "h": 223.2,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.5213,
    "c": 0.17427,
    "h": 264.9
  },
  "luminance": 0.1351
}

Semantic roles & 50–950 ramp

primary
#3660CC
secondary
#D0BE8E
accent
#B745E3
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83

Preview Lab

Preview with #3660CC

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

Preview Lab → · Contrast checker → · Palette generator →

#3660CC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva