#4289D4#4289D4

#4289D4 is a mid, vivid cyan. Relative luminance 0.238; OKLCH L 62.0% C 0.135 H 251.9°. Best body text is #000000 at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#4289D4
RGB	rgb(66, 137, 212)
HSL	hsl(211, 63%, 55%)
HSV	hsv(211, 69%, 83%)
CMYK	cmyk(68.9%, 35.4%, 0%, 16.9%)
CIE-LAB	lab(55.89, 2.04, -45.02)
CIE-LCH	lch(55.89, 45.07, 272.60°)
OKLab	oklab(61.95% -0.0417 -0.1279)
OKLCH	oklch(61.95% 0.135 251.9)
XYZ	xyz(23.0717, 23.8006, 65.6526)
Luminance	0.2380 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289D4 #D48D42

analogous

#42D2D4 #4289D4 #4442D4

triadic

#4289D4 #D44289 #89D442

tetradic

#4289D4 #D442D2 #D48D42 #42D444

square

#4289D4 #D442D2 #D48D42 #42D444

split-complementary

#4289D4 #D44442 #D2D442

monochromatic

#1D4C7F #286BB1 #4289D4 #74A8DF #A6C7EB

Accessibility & contrast

On white

3.65

#4289D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.76

#4289D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289D4

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289D4	#FFFFFF	#000000	##000000
##4289D4	1.00	3.65	5.76	5.76
#FFFFFF	3.65	1.00	21.00	21.00
#000000	5.76	21.00	1.00	1.00
##000000	5.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#678DD7

Deuteranopia (green-blind)

#5280D3

Tritanopia (blue-blind)

#009BA4

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #4289d4;
/* rgb */ color: rgb(66, 137, 212);
/* oklch */ color: oklch(62.0% 0.135 251.9);

Tailwind

colors: {
  custom: {
    50: '#86abe1',
    500: '#4289d4',
    950: '#000000',
  },
}

SCSS

$custom: #4289d4;
$custom-light: #86abe1;
$custom-dark: #000000;

JSON

{
  "hex": "#4289d4",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 212
  },
  "hsl": {
    "h": 210.822,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.61951,
    "c": 0.13451,
    "h": 251.9
  },
  "luminance": 0.23803
}

Semantic roles & 50–950 ramp

primary

#4289D4

secondary

#D8BA9A

accent

#9642E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #4289D4

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

Preview Lab → · Contrast checker → · Palette generator →