#4291E0#4291E0

#4291E0 is a light, vivid cyan. Relative luminance 0.268; OKLCH L 64.4% C 0.142 H 251.0°. Best body text is #000000 at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#4291E0
RGB	rgb(66, 145, 224)
HSL	hsl(210, 72%, 57%)
HSV	hsv(210, 71%, 88%)
CMYK	cmyk(70.5%, 35.3%, 0%, 12.2%)
CIE-LAB	lab(58.78, 1.51, -47.16)
CIE-LCH	lch(58.78, 47.19, 271.84°)
OKLab	oklab(64.41% -0.0462 -0.134)
OKLCH	oklch(64.41% 0.142 251)
XYZ	xyz(25.8217, 26.7880, 74.3163)
Luminance	0.2679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291E0 #E09142

analogous

#42E0E0 #4291E0 #4242E0

triadic

#4291E0 #E04291 #91E042

tetradic

#4291E0 #E042E0 #E09142 #42E042

square

#4291E0 #E042E0 #E09142 #42E042

split-complementary

#4291E0 #E04242 #E0E042

monochromatic

#185490 #2072C5 #4291E0 #77B0E9 #ABCEF1

Accessibility & contrast

On white

3.30

#4291E0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.36

#4291E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291E0

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291E0	#FFFFFF	#000000	##000000
##4291E0	1.00	3.30	6.36	6.36
#FFFFFF	3.30	1.00	21.00	21.00
#000000	6.36	21.00	1.00	1.00
##000000	6.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D96E3

Deuteranopia (green-blind)

#5687DE

Tritanopia (blue-blind)

#00A4AE

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #4291e0;
/* rgb */ color: rgb(66, 145, 224);
/* oklch */ color: oklch(64.4% 0.142 251.0);

Tailwind

colors: {
  custom: {
    50: '#88b0ea',
    500: '#4291e0',
    950: '#000000',
  },
}

SCSS

$custom: #4291e0;
$custom-light: #88b0ea;
$custom-dark: #000000;

JSON

{
  "hex": "#4291e0",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 224
  },
  "hsl": {
    "h": 210,
    "s": 71.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.64414,
    "c": 0.14178,
    "h": 251
  },
  "luminance": 0.26791
}

Semantic roles & 50–950 ramp

primary

#4291E0

secondary

#DFBF9F

accent

#9439EF

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #4291E0

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

Preview Lab → · Contrast checker → · Palette generator →