#4291CC#4291CC

#4291CC is a light, moderate cyan. Relative luminance 0.258; OKLCH L 63.3% C 0.118 H 243.9°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX#4291CC
RGBrgb(66, 145, 204)
HSLhsl(206, 58%, 53%)
HSVhsv(206, 68%, 80%)
CMYKcmyk(67.6%, 28.9%, 0%, 20%)
CIE-LABlab(57.81, -5.39, -37.48)
CIE-LCHlch(57.81, 37.87, 261.82°)
OKLaboklab(63.34% -0.0519 -0.1058)
OKLCHoklch(63.34% 0.118 243.9)
XYZxyz(23.2671, 25.7662, 60.8622)
Luminance0.2577 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4291CC #CC7D42
analogous
#42CCC2 #4291CC #424CCC
triadic
#4291CC #CC4291 #91CC42
tetradic
#4291CC #C242CC #CC7D42 #4CCC42
square
#4291CC #C242CC #CC7D42 #4CCC42
split-complementary
#4291CC #CC424C #CCC242
monochromatic
#1F5074 #2C71A4 #4291CC #72ADD9 #A2C9E6

Accessibility & contrast

On white

3.41
#4291CC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.15
#4291CC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291CC
6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4291CC#FFFFFF#000000##000000
##4291CC1.003.416.156.15
#FFFFFF3.411.0021.0021.00
#0000006.1521.001.001.00
##0000006.1521.001.001.00

Color blindness preview

Protanopia (red-blind)
#7692CF
Deuteranopia (green-blind)
#6385CB
Tritanopia (blue-blind)
#009FA6
Achromatopsia (no color)
#8B8B8B

Design tokens & code

CSS
--color: #4291cc;
/* rgb */ color: rgb(66, 145, 204);
/* oklch */ color: oklch(63.3% 0.118 243.9);
Tailwind
colors: {
  custom: {
    50: '#85b1dc',
    500: '#4291cc',
    950: '#000000',
  },
}
SCSS
$custom: #4291cc;
$custom-light: #85b1dc;
$custom-dark: #000000;
JSON
{
  "hex": "#4291cc",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 204
  },
  "hsl": {
    "h": 205.652,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.6334,
    "c": 0.11786,
    "h": 243.9
  },
  "luminance": 0.25769
}

Semantic roles & 50–950 ramp

primary
#4291CC
secondary
#D3B197
accent
#8947E1
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #4291CC

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

Preview Lab → · Contrast checker → · Palette generator →

#4291CC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva