#4280CC#4280CC

#4280CC is a mid, vivid cyan. Relative luminance 0.210; OKLCH L 59.5% C 0.133 H 254.8°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#4280CC
RGB	rgb(66, 128, 204)
HSL	hsl(213, 58%, 53%)
HSV	hsv(213, 68%, 80%)
CMYK	cmyk(67.6%, 37.3%, 0%, 20%)
CIE-LAB	lab(52.90, 4.62, -45.23)
CIE-LCH	lch(52.90, 45.47, 275.84°)
OKLab	oklab(59.48% -0.0349 -0.1286)
OKLCH	oklch(59.48% 0.133 254.8)
XYZ	xyz(20.8610, 20.9541, 60.0602)
Luminance	0.2096 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4280CC #CC8E42

analogous

#42C5CC #4280CC #4942CC

triadic

#4280CC #CC4280 #80CC42

tetradic

#4280CC #CC42C5 #CC8E42 #42CC49

square

#4280CC #CC42C5 #CC8E42 #42CC49

split-complementary

#4280CC #CC4942 #C5CC42

monochromatic

#1F4574 #2C62A4 #4280CC #72A0D9 #A2C1E6

Accessibility & contrast

On white

4.05

#4280CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#4280CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4280CC

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4280CC	#FFFFFF	#000000	##000000
##4280CC	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E85CF

Deuteranopia (green-blind)

#4A78CA

Tritanopia (blue-blind)

#00929C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4280cc;
/* rgb */ color: rgb(66, 128, 204);
/* oklch */ color: oklch(59.5% 0.133 254.8);

Tailwind

colors: {
  custom: {
    50: '#85a4dc',
    500: '#4280cc',
    950: '#000000',
  },
}

SCSS

$custom: #4280cc;
$custom-light: #85a4dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4280cc",
  "rgb": {
    "r": 66,
    "g": 128,
    "b": 204
  },
  "hsl": {
    "h": 213.043,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.59481,
    "c": 0.13328,
    "h": 254.8
  },
  "luminance": 0.20956
}

Semantic roles & 50–950 ramp

primary

#4280CC

secondary

#D3B897

accent

#9C47E1

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4280CC

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

Preview Lab → · Contrast checker → · Palette generator →