#428EA8#428EA8

#428EA8 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.9% C 0.084 H 223.3°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#428EA8
RGB	rgb(66, 142, 168)
HSL	hsl(195, 44%, 46%)
HSV	hsv(195, 61%, 66%)
CMYK	cmyk(60.7%, 15.5%, 0%, 34.1%)
CIE-LAB	lab(55.41, -15.53, -20.76)
CIE-LCH	lch(55.41, 25.92, 233.21°)
OKLab	oklab(60.93% -0.0613 -0.0578)
OKLCH	oklch(60.93% 0.084 223.3)
XYZ	xyz(18.9849, 23.3295, 40.5407)
Luminance	0.2333 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EA8 #A85C42

analogous

#42A88F #428EA8 #425BA8

triadic

#428EA8 #A8428E #8EA842

tetradic

#428EA8 #8F42A8 #A85C42 #5BA842

square

#428EA8 #8F42A8 #A85C42 #5BA842

split-complementary

#428EA8 #A8425B #A88F42

monochromatic

#1F4450 #31697C #428EA8 #65ABC2 #91C3D4

Accessibility & contrast

On white

3.71

#428EA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#428EA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EA8

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EA8	#FFFFFF	#000000	##000000
##428EA8	1.00	3.71	5.67	5.67
#FFFFFF	3.71	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)

#7F8BA9

Deuteranopia (green-blind)

#7080A8

Tritanopia (blue-blind)

#009696

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ea8;
/* rgb */ color: rgb(66, 142, 168);
/* oklch */ color: oklch(60.9% 0.084 223.3);

Tailwind

colors: {
  custom: {
    50: '#80afc2',
    500: '#428ea8',
    950: '#000000',
  },
}

SCSS

$custom: #428ea8;
$custom-light: #80afc2;
$custom-dark: #000000;

JSON

{
  "hex": "#428ea8",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 168
  },
  "hsl": {
    "h": 195.294,
    "s": 43.59,
    "l": 45.882
  },
  "oklch": {
    "l": 0.60931,
    "c": 0.08426,
    "h": 223.3
  },
  "luminance": 0.23331
}

Semantic roles & 50–950 ramp

primary

#428EA8

secondary

#BF9587

accent

#7554D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428EA8

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

Preview Lab → · Contrast checker → · Palette generator →