#428FA9#428FA9

#428FA9 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.2% C 0.085 H 223.0°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#428FA9
RGB	rgb(66, 143, 169)
HSL	hsl(195, 44%, 46%)
HSV	hsv(195, 61%, 66%)
CMYK	cmyk(60.9%, 15.4%, 0%, 33.7%)
CIE-LAB	lab(55.75, -15.76, -20.81)
CIE-LCH	lch(55.75, 26.10, 232.87°)
OKLab	oklab(61.22% -0.062 -0.0579)
OKLCH	oklch(61.22% 0.085 223)
XYZ	xyz(19.2278, 23.6658, 41.0831)
Luminance	0.2367 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FA9 #A95C42

analogous

#42A98F #428FA9 #425BA9

triadic

#428FA9 #A9428F #8FA942

tetradic

#428FA9 #8F42A9 #A95C42 #5BA942

square

#428FA9 #8F42A9 #A95C42 #5BA942

split-complementary

#428FA9 #A9425B #A98F42

monochromatic

#204551 #316A7D #428FA9 #65ABC3 #91C3D4

Accessibility & contrast

On white

3.66

#428FA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#428FA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FA9

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FA9	#FFFFFF	#000000	##000000
##428FA9	1.00	3.66	5.73	5.73
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808CAA

Deuteranopia (green-blind)

#7181A9

Tritanopia (blue-blind)

#009797

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428fa9;
/* rgb */ color: rgb(66, 143, 169);
/* oklch */ color: oklch(61.2% 0.085 223.0);

Tailwind

colors: {
  custom: {
    50: '#80b0c2',
    500: '#428fa9',
    950: '#000000',
  },
}

SCSS

$custom: #428fa9;
$custom-light: #80b0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#428fa9",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 169
  },
  "hsl": {
    "h": 195.146,
    "s": 43.83,
    "l": 46.078
  },
  "oklch": {
    "l": 0.61217,
    "c": 0.08488,
    "h": 223
  },
  "luminance": 0.23668
}

Semantic roles & 50–950 ramp

primary

#428FA9

secondary

#C09587

accent

#7454D4

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428FA9

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

Preview Lab → · Contrast checker → · Palette generator →