#4291CB#4291CB

#4291CB is a light, moderate cyan. Relative luminance 0.257; OKLCH L 63.3% C 0.117 H 243.4°. Best body text is #000000 at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#4291CB
RGB	rgb(66, 145, 203)
HSL	hsl(205, 57%, 53%)
HSV	hsv(205, 67%, 80%)
CMYK	cmyk(67.5%, 28.6%, 0%, 20.4%)
CIE-LAB	lab(57.77, -5.73, -36.99)
CIE-LCH	lch(57.77, 37.43, 261.20°)
OKLab	oklab(63.29% -0.0522 -0.1044)
OKLCH	oklch(63.29% 0.117 243.4)
XYZ	xyz(23.1476, 25.7184, 60.2326)
Luminance	0.2572 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291CB #CB7C42

analogous

#42CBC0 #4291CB #424DCB

triadic

#4291CB #CB4291 #91CB42

tetradic

#4291CB #C042CB #CB7C42 #4DCB42

square

#4291CB #C042CB #CB7C42 #4DCB42

split-complementary

#4291CB #CB424D #CBC042

monochromatic

#205073 #2D71A3 #4291CB #72ADD8 #A2C9E5

Accessibility & contrast

On white

3.42

#4291CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.14

#4291CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291CB

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291CB	#FFFFFF	#000000	##000000
##4291CB	1.00	3.42	6.14	6.14
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.14	21.00	1.00	1.00
##000000	6.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7792CE

Deuteranopia (green-blind)

#6485CA

Tritanopia (blue-blind)

#009FA5

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #4291cb;
/* rgb */ color: rgb(66, 145, 203);
/* oklch */ color: oklch(63.3% 0.117 243.4);

Tailwind

colors: {
  custom: {
    50: '#85b1db',
    500: '#4291cb',
    950: '#000000',
  },
}

SCSS

$custom: #4291cb;
$custom-light: #85b1db;
$custom-dark: #000000;

JSON

{
  "hex": "#4291cb",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 203
  },
  "hsl": {
    "h": 205.401,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.63289,
    "c": 0.11672,
    "h": 243.4
  },
  "luminance": 0.25721
}

Semantic roles & 50–950 ramp

primary

#4291CB

secondary

#D2B097

accent

#8848E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4291CB

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

Preview Lab → · Contrast checker → · Palette generator →