#4291CF#4291CF

#4291CF is a light, vivid cyan. Relative luminance 0.259; OKLCH L 63.5% C 0.121 H 245.2°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#4291CF
RGB	rgb(66, 145, 207)
HSL	hsl(206, 59%, 54%)
HSV	hsv(206, 68%, 81%)
CMYK	cmyk(68.1%, 30%, 0%, 18.8%)
CIE-LAB	lab(57.95, -4.36, -38.95)
CIE-LCH	lch(57.95, 39.20, 263.61°)
OKLab	oklab(63.5% -0.051 -0.1101)
OKLCH	oklch(63.5% 0.121 245.2)
XYZ	xyz(23.6304, 25.9115, 62.7754)
Luminance	0.2591 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291CF #CF8042

analogous

#42CFC6 #4291CF #424ACF

triadic

#4291CF #CF4291 #91CF42

tetradic

#4291CF #C642CF #CF8042 #4ACF42

square

#4291CF #C642CF #CF8042 #4ACF42

split-complementary

#4291CF #CF424A #CFC642

monochromatic

#1F5178 #2B71A9 #4291CF #73ADDB #A4CAE8

Accessibility & contrast

On white

3.40

#4291CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#4291CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291CF

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291CF	#FFFFFF	#000000	##000000
##4291CF	1.00	3.40	6.18	6.18
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.18	21.00	1.00	1.00
##000000	6.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7593D2

Deuteranopia (green-blind)

#6285CE

Tritanopia (blue-blind)

#00A0A7

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #4291cf;
/* rgb */ color: rgb(66, 145, 207);
/* oklch */ color: oklch(63.5% 0.121 245.2);

Tailwind

colors: {
  custom: {
    50: '#86b1de',
    500: '#4291cf',
    950: '#000000',
  },
}

SCSS

$custom: #4291cf;
$custom-light: #86b1de;
$custom-dark: #000000;

JSON

{
  "hex": "#4291cf",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 207
  },
  "hsl": {
    "h": 206.383,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.63495,
    "c": 0.12132,
    "h": 245.2
  },
  "luminance": 0.25914
}

Semantic roles & 50–950 ramp

primary

#4291CF

secondary

#D5B398

accent

#8A45E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4291CF

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

Preview Lab → · Contrast checker → · Palette generator →