#4288D4#4288D4

#4288D4 is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.7% C 0.135 H 252.5°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#4288D4
RGB	rgb(66, 136, 212)
HSL	hsl(211, 63%, 55%)
HSV	hsv(211, 69%, 83%)
CMYK	cmyk(68.9%, 35.8%, 0%, 16.9%)
CIE-LAB	lab(55.60, 2.63, -45.47)
CIE-LCH	lch(55.60, 45.55, 273.32°)
OKLab	oklab(61.73% -0.0407 -0.1292)
OKLCH	oklch(61.73% 0.135 252.5)
XYZ	xyz(22.9302, 23.5176, 65.6055)
Luminance	0.2352 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288D4 #D48E42

analogous

#42D1D4 #4288D4 #4542D4

triadic

#4288D4 #D44288 #88D442

tetradic

#4288D4 #D442D1 #D48E42 #42D445

square

#4288D4 #D442D1 #D48E42 #42D445

split-complementary

#4288D4 #D44542 #D1D442

monochromatic

#1D4C7F #286AB1 #4288D4 #74A7DF #A6C7EB

Accessibility & contrast

On white

3.68

#4288D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.70

#4288D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288D4

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288D4	#FFFFFF	#000000	##000000
##4288D4	1.00	3.68	5.70	5.70
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.70	21.00	1.00	1.00
##000000	5.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#668DD7

Deuteranopia (green-blind)

#517FD2

Tritanopia (blue-blind)

#009AA4

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #4288d4;
/* rgb */ color: rgb(66, 136, 212);
/* oklch */ color: oklch(61.7% 0.135 252.5);

Tailwind

colors: {
  custom: {
    50: '#86aae1',
    500: '#4288d4',
    950: '#000000',
  },
}

SCSS

$custom: #4288d4;
$custom-light: #86aae1;
$custom-dark: #000000;

JSON

{
  "hex": "#4288d4",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 212
  },
  "hsl": {
    "h": 211.233,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.61728,
    "c": 0.13548,
    "h": 252.5
  },
  "luminance": 0.2352
}

Semantic roles & 50–950 ramp

primary

#4288D4

secondary

#D8BA9A

accent

#9742E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4288D4

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

Preview Lab → · Contrast checker → · Palette generator →