#428FA2#428FA2

#428FA2 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 60.9% C 0.081 H 216.3°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#428FA2
RGB	rgb(66, 143, 162)
HSL	hsl(192, 42%, 45%)
HSV	hsv(192, 59%, 64%)
CMYK	cmyk(59.3%, 11.7%, 0%, 36.5%)
CIE-LAB	lab(55.49, -17.93, -17.20)
CIE-LCH	lch(55.49, 24.84, 223.80°)
OKLab	oklab(60.92% -0.0648 -0.0477)
OKLCH	oklch(60.92% 0.081 216.3)
XYZ	xyz(18.5882, 23.4100, 37.7144)
Luminance	0.2341 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FA2 #A25542

analogous

#42A285 #428FA2 #425FA2

triadic

#428FA2 #A2428F #8FA242

tetradic

#428FA2 #8542A2 #A25542 #5FA242

square

#428FA2 #8542A2 #A25542 #5FA242

split-complementary

#428FA2 #A2425F #A28542

monochromatic

#1F424B #306977 #428FA2 #62ADBF #8EC4D1

Accessibility & contrast

On white

3.70

#428FA2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#428FA2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FA2

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FA2	#FFFFFF	#000000	##000000
##428FA2	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#828BA3

Deuteranopia (green-blind)

#7480A2

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428fa2;
/* rgb */ color: rgb(66, 143, 162);
/* oklch */ color: oklch(60.9% 0.081 216.3);

Tailwind

colors: {
  custom: {
    50: '#80b0bd',
    500: '#428fa2',
    950: '#000000',
  },
}

SCSS

$custom: #428fa2;
$custom-light: #80b0bd;
$custom-dark: #000000;

JSON

{
  "hex": "#428fa2",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 162
  },
  "hsl": {
    "h": 191.875,
    "s": 42.105,
    "l": 44.706
  },
  "oklch": {
    "l": 0.60923,
    "c": 0.08051,
    "h": 216.3
  },
  "luminance": 0.23412
}

Semantic roles & 50–950 ramp

primary

#428FA2

secondary

#BC8F84

accent

#6E56D2

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428FA2

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

Preview Lab → · Contrast checker → · Palette generator →