#4287CD#4287CD

#4287CD is a mid, vivid cyan. Relative luminance 0.229; OKLCH L 61.1% C 0.128 H 251.0°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#4287CD
RGB	rgb(66, 135, 205)
HSL	hsl(210, 58%, 53%)
HSV	hsv(210, 68%, 80%)
CMYK	cmyk(67.8%, 34.1%, 0%, 19.6%)
CIE-LAB	lab(54.96, 0.79, -42.54)
CIE-LCH	lch(54.96, 42.54, 271.06°)
OKLab	oklab(61.11% -0.0416 -0.1206)
OKLCH	oklch(61.11% 0.128 251)
XYZ	xyz(21.9261, 22.8917, 61.0088)
Luminance	0.2289 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4287CD #CD8842

analogous

#42CCCD #4287CD #4242CD

triadic

#4287CD #CD4287 #87CD42

tetradic

#4287CD #CD42CC #CD8842 #42CD42

square

#4287CD #CD42CC #CD8842 #42CD42

split-complementary

#4287CD #CD4242 #CCCD42

monochromatic

#1F4A76 #2C68A6 #4287CD #72A6DA #A3C4E7

Accessibility & contrast

On white

3.76

#4287CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#4287CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4287CD

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4287CD	#FFFFFF	#000000	##000000
##4287CD	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#688BD0

Deuteranopia (green-blind)

#547ECC

Tritanopia (blue-blind)

#0097A0

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4287cd;
/* rgb */ color: rgb(66, 135, 205);
/* oklch */ color: oklch(61.1% 0.128 251.0);

Tailwind

colors: {
  custom: {
    50: '#85a9dc',
    500: '#4287cd',
    950: '#000000',
  },
}

SCSS

$custom: #4287cd;
$custom-light: #85a9dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4287cd",
  "rgb": {
    "r": 66,
    "g": 135,
    "b": 205
  },
  "hsl": {
    "h": 210.216,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.6111,
    "c": 0.12762,
    "h": 251
  },
  "luminance": 0.22894
}

Semantic roles & 50–950 ramp

primary

#4287CD

secondary

#D3B697

accent

#9446E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4287CD

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

Preview Lab → · Contrast checker → · Palette generator →