#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
RGB	rgb(66, 145, 204)
HSL	hsl(206, 58%, 53%)
HSV	hsv(206, 68%, 80%)
CMYK	cmyk(67.6%, 28.9%, 0%, 20%)
CIE-LAB	lab(57.81, -5.39, -37.48)
CIE-LCH	lch(57.81, 37.87, 261.82°)
OKLab	oklab(63.34% -0.0519 -0.1058)
OKLCH	oklch(63.34% 0.118 243.9)
XYZ	xyz(23.2671, 25.7662, 60.8622)
Luminance	0.2577 (WCAG relative)
Temperature	cool
Family	cyan

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
##4291CC	1.00	3.41	6.15	6.15
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.15	21.00	1.00	1.00
##000000	6.15	21.00	1.00	1.00

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 →