#4287D4#4287D4

#4287D4 is a mid, vivid cyan. Relative luminance 0.232; OKLCH L 61.5% C 0.136 H 253.1°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#4287D4
RGB	rgb(66, 135, 212)
HSL	hsl(212, 63%, 55%)
HSV	hsv(212, 69%, 83%)
CMYK	cmyk(68.9%, 36.3%, 0%, 16.9%)
CIE-LAB	lab(55.32, 3.23, -45.92)
CIE-LCH	lch(55.32, 46.04, 274.02°)
OKLab	oklab(61.5% -0.0398 -0.1305)
OKLCH	oklch(61.5% 0.136 253.1)
XYZ	xyz(22.7900, 23.2373, 65.5588)
Luminance	0.2324 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287D4 #D48F42

analogous

#42D0D4 #4287D4 #4642D4

triadic

#4287D4 #D44287 #87D442

tetradic

#4287D4 #D442D0 #D48F42 #42D446

square

#4287D4 #D442D0 #D48F42 #42D446

split-complementary

#4287D4 #D44642 #D0D442

monochromatic

#1D4B7F #2869B1 #4287D4 #74A7DF #A6C6EB

Accessibility & contrast

On white

3.72

#4287D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#4287D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287D4

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287D4	#FFFFFF	#000000	##000000
##4287D4	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#648CD7

Deuteranopia (green-blind)

#4F7ED2

Tritanopia (blue-blind)

#0099A3

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4287d4;
/* rgb */ color: rgb(66, 135, 212);
/* oklch */ color: oklch(61.5% 0.136 253.1);

Tailwind

colors: {
  custom: {
    50: '#86a9e1',
    500: '#4287d4',
    950: '#000000',
  },
}

SCSS

$custom: #4287d4;
$custom-light: #86a9e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4287d4",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 212
  },
  "hsl": {
    "h": 211.644,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.61504,
    "c": 0.13647,
    "h": 253.1
  },
  "luminance": 0.2324
}

Semantic roles & 50–950 ramp

primary

#4287D4

secondary

#D8BB9A

accent

#9842E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4287D4

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

Preview Lab → · Contrast checker → · Palette generator →