#428EA9#428EA9

#428EA9 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.0% C 0.085 H 224.2°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#428EA9
RGB	rgb(66, 142, 169)
HSL	hsl(196, 44%, 46%)
HSV	hsv(196, 61%, 66%)
CMYK	cmyk(60.9%, 16%, 0%, 33.7%)
CIE-LAB	lab(55.45, -15.21, -21.28)
CIE-LCH	lch(55.45, 26.15, 234.44°)
OKLab	oklab(60.98% -0.0609 -0.0592)
OKLCH	oklch(60.98% 0.085 224.2)
XYZ	xyz(19.0784, 23.3669, 41.0333)
Luminance	0.2337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EA9 #A95D42

analogous

#42A990 #428EA9 #425AA9

triadic

#428EA9 #A9428E #8EA942

tetradic

#428EA9 #9042A9 #A95D42 #5AA942

square

#428EA9 #9042A9 #A95D42 #5AA942

split-complementary

#428EA9 #A9425A #A99042

monochromatic

#204451 #31697D #428EA9 #65AAC3 #91C3D4

Accessibility & contrast

On white

3.70

#428EA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#428EA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EA9

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EA9	#FFFFFF	#000000	##000000
##428EA9	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8BAA

Deuteranopia (green-blind)

#7080A9

Tritanopia (blue-blind)

#009697

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ea9;
/* rgb */ color: rgb(66, 142, 169);
/* oklch */ color: oklch(61.0% 0.085 224.2);

Tailwind

colors: {
  custom: {
    50: '#80afc2',
    500: '#428ea9',
    950: '#000000',
  },
}

SCSS

$custom: #428ea9;
$custom-light: #80afc2;
$custom-dark: #000000;

JSON

{
  "hex": "#428ea9",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 169
  },
  "hsl": {
    "h": 195.728,
    "s": 43.83,
    "l": 46.078
  },
  "oklch": {
    "l": 0.60975,
    "c": 0.08499,
    "h": 224.2
  },
  "luminance": 0.23369
}

Semantic roles & 50–950 ramp

primary

#428EA9

secondary

#C09687

accent

#7654D4

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428EA9

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

Preview Lab → · Contrast checker → · Palette generator →