#4287CE#4287CE

#4287CE is a mid, vivid cyan. Relative luminance 0.229; OKLCH L 61.2% C 0.129 H 251.3°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#4287CE
RGB	rgb(66, 135, 206)
HSL	hsl(210, 59%, 53%)
HSV	hsv(210, 68%, 81%)
CMYK	cmyk(68%, 34.5%, 0%, 19.2%)
CIE-LAB	lab(55.01, 1.13, -43.02)
CIE-LCH	lch(55.01, 43.04, 271.51°)
OKLab	oklab(61.17% -0.0413 -0.1221)
OKLCH	oklch(61.17% 0.129 251.3)
XYZ	xyz(22.0472, 22.9401, 61.6465)
Luminance	0.2294 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287CE #CE8942

analogous

#42CDCE #4287CE #4342CE

triadic

#4287CE #CE4287 #87CE42

tetradic

#4287CE #CE42CD #CE8942 #42CE43

square

#4287CE #CE42CD #CE8942 #42CE43

split-complementary

#4287CE #CE4342 #CDCE42

monochromatic

#1F4A77 #2B69A7 #4287CE #73A6DB #A3C5E7

Accessibility & contrast

On white

3.76

#4287CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#4287CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287CE

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287CE	#FFFFFF	#000000	##000000
##4287CE	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#678BD1

Deuteranopia (green-blind)

#547ECD

Tritanopia (blue-blind)

#0098A1

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4287ce;
/* rgb */ color: rgb(66, 135, 206);
/* oklch */ color: oklch(61.2% 0.129 251.3);

Tailwind

colors: {
  custom: {
    50: '#85a9dd',
    500: '#4287ce',
    950: '#000000',
  },
}

SCSS

$custom: #4287ce;
$custom-light: #85a9dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4287ce",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 206
  },
  "hsl": {
    "h": 210.429,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.61165,
    "c": 0.12888,
    "h": 251.3
  },
  "luminance": 0.22942
}

Semantic roles & 50–950 ramp

primary

#4287CE

secondary

#D4B698

accent

#9546E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4287CE

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

Preview Lab → · Contrast checker → · Palette generator →