#428DCD#428DCD

#428DCD is a light, vivid cyan. Relative luminance 0.246; OKLCH L 62.5% C 0.122 H 247.1°. Best body text is #000000 at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#428DCD
RGB	rgb(66, 141, 205)
HSL	hsl(208, 58%, 53%)
HSV	hsv(208, 68%, 80%)
CMYK	cmyk(67.8%, 31.2%, 0%, 19.6%)
CIE-LAB	lab(56.70, -2.74, -39.80)
CIE-LCH	lch(56.70, 39.90, 266.07°)
OKLab	oklab(62.47% -0.0476 -0.1126)
OKLCH	oklch(62.47% 0.122 247.1)
XYZ	xyz(22.7869, 24.6134, 61.2957)
Luminance	0.2462 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DCD #CD8242

analogous

#42CDC7 #428DCD #4247CD

triadic

#428DCD #CD428D #8DCD42

tetradic

#428DCD #C742CD #CD8242 #47CD42

square

#428DCD #C742CD #CD8242 #47CD42

split-complementary

#428DCD #CD4247 #CDC742

monochromatic

#1F4E76 #2C6EA6 #428DCD #72AADA #A3C7E7

Accessibility & contrast

On white

3.55

#428DCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.92

#428DCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DCD

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DCD	#FFFFFF	#000000	##000000
##428DCD	1.00	3.55	5.92	5.92
#FFFFFF	3.55	1.00	21.00	21.00
#000000	5.92	21.00	1.00	1.00
##000000	5.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#718FD0

Deuteranopia (green-blind)

#5D82CC

Tritanopia (blue-blind)

#009CA4

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428dcd;
/* rgb */ color: rgb(66, 141, 205);
/* oklch */ color: oklch(62.5% 0.122 247.1);

Tailwind

colors: {
  custom: {
    50: '#85aedc',
    500: '#428dcd',
    950: '#000000',
  },
}

SCSS

$custom: #428dcd;
$custom-light: #85aedc;
$custom-dark: #000000;

JSON

{
  "hex": "#428dcd",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 205
  },
  "hsl": {
    "h": 207.626,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.62474,
    "c": 0.12224,
    "h": 247.1
  },
  "luminance": 0.24616
}

Semantic roles & 50–950 ramp

primary

#428DCD

secondary

#D3B397

accent

#8E46E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428DCD

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

Preview Lab → · Contrast checker → · Palette generator →