#3C66CF#3C66CF

#3C66CF is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.8% C 0.169 H 264.8°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX#3C66CF
RGBrgb(60, 102, 207)
HSLhsl(223, 60%, 52%)
HSVhsv(223, 71%, 81%)
CMYKcmyk(71%, 50.7%, 0%, 18.8%)
CIE-LABlab(45.59, 20.99, -58.66)
CIE-LCHlch(45.59, 62.30, 289.69°)
OKLaboklab(53.84% -0.0152 -0.1686)
OKLCHoklch(53.84% 0.169 264.8)
XYZxyz(17.8734, 14.9665, 60.9663)
Luminance0.1497 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3C66CF #CFA53C
analogous
#3CB0CF #3C66CF #5B3CCF
triadic
#3C66CF #CF3C66 #66CF3C
tetradic
#3C66CF #CF3CB0 #CFA53C #3CCF5B
square
#3C66CF #CF3CB0 #CFA53C #3CCF5B
split-complementary
#3C66CF #CF5B3C #B0CF3C
monochromatic
#1D3674 #294CA5 #3C66CF #6D8DDB #9EB3E7

Accessibility & contrast

On white

5.26
#3C66CF on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.99
#3C66CF on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66CF
5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3C66CF#FFFFFF#000000##FFFFFF
##3C66CF1.005.263.995.26
#FFFFFF5.261.0021.001.00
#0000003.9921.001.0021.00
##FFFFFF5.261.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2573D3
Deuteranopia (green-blind)
#0066CD
Tritanopia (blue-blind)
#007F91
Achromatopsia (no color)
#6C6C6C

Design tokens & code

CSS
--color: #3c66cf;
/* rgb */ color: rgb(60, 102, 207);
/* oklch */ color: oklch(53.8% 0.169 264.8);
Tailwind
colors: {
  custom: {
    50: '#8491de',
    500: '#3c66cf',
    950: '#000000',
  },
}
SCSS
$custom: #3c66cf;
$custom-light: #8491de;
$custom-dark: #000000;
JSON
{
  "hex": "#3c66cf",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 222.857,
    "s": 60.494,
    "l": 52.353
  },
  "oklch": {
    "l": 0.53835,
    "c": 0.16924,
    "h": 264.8
  },
  "luminance": 0.14968
}

Semantic roles & 50–950 ramp

primary
#3C66CF
secondary
#D3C193
accent
#B644E4
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83

Preview Lab

Preview with #3C66CF

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

Preview Lab → · Contrast checker → · Palette generator →

#3C66CF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva