#428FA8#428FA8

#428FA8 is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.2% C 0.084 H 222.1°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#428FA8
RGB	rgb(66, 143, 168)
HSL	hsl(195, 44%, 46%)
HSV	hsv(195, 61%, 66%)
CMYK	cmyk(60.7%, 14.9%, 0%, 34.1%)
CIE-LAB	lab(55.71, -16.07, -20.30)
CIE-LCH	lch(55.71, 25.89, 231.63°)
OKLab	oklab(61.17% -0.0624 -0.0565)
OKLCH	oklch(61.17% 0.084 222.1)
XYZ	xyz(19.1343, 23.6284, 40.5906)
Luminance	0.2363 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FA8 #A85B42

analogous

#42A88E #428FA8 #425CA8

triadic

#428FA8 #A8428F #8FA842

tetradic

#428FA8 #8E42A8 #A85B42 #5CA842

square

#428FA8 #8E42A8 #A85B42 #5CA842

split-complementary

#428FA8 #A8425C #A88E42

monochromatic

#1F4450 #316A7C #428FA8 #65ABC2 #91C3D4

Accessibility & contrast

On white

3.67

#428FA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#428FA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FA8

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FA8	#FFFFFF	#000000	##000000
##428FA8	1.00	3.67	5.73	5.73
#FFFFFF	3.67	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)

#808CA9

Deuteranopia (green-blind)

#7281A8

Tritanopia (blue-blind)

#009797

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428fa8;
/* rgb */ color: rgb(66, 143, 168);
/* oklch */ color: oklch(61.2% 0.084 222.1);

Tailwind

colors: {
  custom: {
    50: '#80b0c2',
    500: '#428fa8',
    950: '#000000',
  },
}

SCSS

$custom: #428fa8;
$custom-light: #80b0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#428fa8",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 168
  },
  "hsl": {
    "h": 194.706,
    "s": 43.59,
    "l": 45.882
  },
  "oklch": {
    "l": 0.61174,
    "c": 0.08419,
    "h": 222.1
  },
  "luminance": 0.2363
}

Semantic roles & 50–950 ramp

primary

#428FA8

secondary

#BF9587

accent

#7454D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428FA8

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

Preview Lab → · Contrast checker → · Palette generator →