#4280C9#4280C9

#4280C9 is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.3% C 0.129 H 254.0°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#4280C9
RGB	rgb(66, 128, 201)
HSL	hsl(212, 56%, 52%)
HSV	hsv(212, 67%, 79%)
CMYK	cmyk(67.2%, 36.3%, 0%, 21.2%)
CIE-LAB	lab(52.74, 3.57, -43.77)
CIE-LCH	lch(52.74, 43.92, 274.66°)
OKLab	oklab(59.31% -0.0357 -0.1243)
OKLCH	oklch(59.31% 0.129 254)
XYZ	xyz(20.5047, 20.8115, 58.1834)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280C9 #C98B42

analogous

#42C4C9 #4280C9 #4742C9

triadic

#4280C9 #C94280 #80C942

tetradic

#4280C9 #C942C4 #C98B42 #42C947

square

#4280C9 #C942C4 #C98B42 #42C947

split-complementary

#4280C9 #C94742 #C4C942

monochromatic

#204570 #2E62A0 #4280C9 #72A0D7 #A1C0E4

Accessibility & contrast

On white

4.07

#4280C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#4280C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280C9

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280C9	#FFFFFF	#000000	##000000
##4280C9	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CC

Deuteranopia (green-blind)

#4C78C8

Tritanopia (blue-blind)

#00919B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4280c9;
/* rgb */ color: rgb(66, 128, 201);
/* oklch */ color: oklch(59.3% 0.129 254.0);

Tailwind

colors: {
  custom: {
    50: '#84a4da',
    500: '#4280c9',
    950: '#000000',
  },
}

SCSS

$custom: #4280c9;
$custom-light: #84a4da;
$custom-dark: #000000;

JSON

{
  "hex": "#4280c9",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 201
  },
  "hsl": {
    "h": 212.444,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.59308,
    "c": 0.12937,
    "h": 254
  },
  "luminance": 0.20814
}

Semantic roles & 50–950 ramp

primary

#4280C9

secondary

#D1B696

accent

#9A49DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4280C9

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

Preview Lab → · Contrast checker → · Palette generator →