#4280CF#4280CF

#4280CF is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.7% C 0.137 H 255.6°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#4280CF
RGB	rgb(66, 128, 207)
HSL	hsl(214, 59%, 54%)
HSV	hsv(214, 68%, 81%)
CMYK	cmyk(68.1%, 38.2%, 0%, 18.8%)
CIE-LAB	lab(53.06, 5.68, -46.68)
CIE-LCH	lch(53.06, 47.03, 276.94°)
OKLab	oklab(59.66% -0.0342 -0.1329)
OKLCH	oklch(59.66% 0.137 255.6)
XYZ	xyz(21.2243, 21.0994, 61.9734)
Luminance	0.2110 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280CF #CF9142

analogous

#42C6CF #4280CF #4A42CF

triadic

#4280CF #CF4280 #80CF42

tetradic

#4280CF #CF42C6 #CF9142 #42CF4A

square

#4280CF #CF42C6 #CF9142 #42CF4A

split-complementary

#4280CF #CF4A42 #C6CF42

monochromatic

#1F4678 #2B62A9 #4280CF #73A1DB #A4C2E8

Accessibility & contrast

On white

4.02

#4280CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#4280CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280CF

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280CF	#FFFFFF	#000000	##000000
##4280CF	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C86D2

Deuteranopia (green-blind)

#4779CD

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #4280cf;
/* rgb */ color: rgb(66, 128, 207);
/* oklch */ color: oklch(59.7% 0.137 255.6);

Tailwind

colors: {
  custom: {
    50: '#85a4de',
    500: '#4280cf',
    950: '#000000',
  },
}

SCSS

$custom: #4280cf;
$custom-light: #85a4de;
$custom-dark: #000000;

JSON

{
  "hex": "#4280cf",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 207
  },
  "hsl": {
    "h": 213.617,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59657,
    "c": 0.1372,
    "h": 255.6
  },
  "luminance": 0.21102
}

Semantic roles & 50–950 ramp

primary

#4280CF

secondary

#D5BA98

accent

#9D45E3

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4280CF

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

Preview Lab → · Contrast checker → · Palette generator →