#4288E2#4288E2

#4288E2 is a light, vivid cyan. Relative luminance 0.243; OKLCH L 62.5% C 0.153 H 255.9°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#4288E2
RGB	rgb(66, 136, 226)
HSL	hsl(214, 73%, 57%)
HSV	hsv(214, 71%, 89%)
CMYK	cmyk(70.8%, 39.8%, 0%, 11.4%)
CIE-LAB	lab(56.34, 7.57, -52.15)
CIE-LCH	lch(56.34, 52.69, 278.26°)
OKLab	oklab(62.55% -0.0374 -0.1488)
OKLCH	oklch(62.55% 0.153 255.9)
XYZ	xyz(24.7734, 24.2549, 75.3128)
Luminance	0.2426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288E2 #E29C42

analogous

#42D8E2 #4288E2 #4C42E2

triadic

#4288E2 #E24288 #88E242

tetradic

#4288E2 #E242D8 #E29C42 #42E24C

square

#4288E2 #E242D8 #E29C42 #42E24C

split-complementary

#4288E2 #E24C42 #D8E242

monochromatic

#174D93 #1F69C8 #4288E2 #77A9EA #ACCBF2

Accessibility & contrast

On white

3.59

#4288E2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.85

#4288E2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288E2

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288E2	#FFFFFF	#000000	##000000
##4288E2	1.00	3.59	5.85	5.85
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.85	21.00	1.00	1.00
##000000	5.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E8FE6

Deuteranopia (green-blind)

#4480E0

Tritanopia (blue-blind)

#009DAA

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #4288e2;
/* rgb */ color: rgb(66, 136, 226);
/* oklch */ color: oklch(62.5% 0.153 255.9);

Tailwind

colors: {
  custom: {
    50: '#89aaeb',
    500: '#4288e2',
    950: '#000000',
  },
}

SCSS

$custom: #4288e2;
$custom-light: #89aaeb;
$custom-dark: #000000;

JSON

{
  "hex": "#4288e2",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 226
  },
  "hsl": {
    "h": 213.75,
    "s": 73.394,
    "l": 57.255
  },
  "oklch": {
    "l": 0.62546,
    "c": 0.1534,
    "h": 255.9
  },
  "luminance": 0.24258
}

Semantic roles & 50–950 ramp

primary

#4288E2

secondary

#E0C49F

accent

#9F38F0

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4288E2

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

Preview Lab → · Contrast checker → · Palette generator →