#4287E1#4287E1

#4287E1 is a light, vivid cyan. Relative luminance 0.239; OKLCH L 62.3% C 0.153 H 256.1°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#4287E1
RGB	rgb(66, 135, 225)
HSL	hsl(214, 73%, 57%)
HSV	hsv(214, 71%, 88%)
CMYK	cmyk(70.7%, 40%, 0%, 11.8%)
CIE-LAB	lab(56.01, 7.82, -52.12)
CIE-LCH	lch(56.01, 52.70, 278.53°)
OKLab	oklab(62.27% -0.0367 -0.1487)
OKLCH	oklch(62.27% 0.153 256.1)
XYZ	xyz(24.4964, 23.9198, 74.5455)
Luminance	0.2392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287E1 #E19C42

analogous

#42D7E1 #4287E1 #4C42E1

triadic

#4287E1 #E14287 #87E142

tetradic

#4287E1 #E142D7 #E19C42 #42E14C

square

#4287E1 #E142D7 #E19C42 #42E14C

split-complementary

#4287E1 #E14C42 #D7E142

monochromatic

#174C92 #1F68C6 #4287E1 #77A9E9 #ACCAF2

Accessibility & contrast

On white

3.63

#4287E1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#4287E1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287E1

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287E1	#FFFFFF	#000000	##000000
##4287E1	1.00	3.63	5.78	5.78
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D8EE5

Deuteranopia (green-blind)

#437FDF

Tritanopia (blue-blind)

#009CA9

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #4287e1;
/* rgb */ color: rgb(66, 135, 225);
/* oklch */ color: oklch(62.3% 0.153 256.1);

Tailwind

colors: {
  custom: {
    50: '#89a9eb',
    500: '#4287e1',
    950: '#000000',
  },
}

SCSS

$custom: #4287e1;
$custom-light: #89a9eb;
$custom-dark: #000000;

JSON

{
  "hex": "#4287e1",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 225
  },
  "hsl": {
    "h": 213.962,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.62268,
    "c": 0.15318,
    "h": 256.1
  },
  "luminance": 0.23922
}

Semantic roles & 50–950 ramp

primary

#4287E1

secondary

#E0C49F

accent

#A038EF

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4287E1

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

Preview Lab → · Contrast checker → · Palette generator →