#428BAC#428BAC

#428BAC is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.4% C 0.088 H 230.1°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#428BAC
RGB	rgb(66, 139, 172)
HSL	hsl(199, 45%, 47%)
HSV	hsv(199, 62%, 67%)
CMYK	cmyk(61.6%, 19.2%, 0%, 32.5%)
CIE-LAB	lab(54.66, -12.60, -24.21)
CIE-LCH	lch(54.66, 27.29, 242.50°)
OKLab	oklab(60.38% -0.0564 -0.0676)
OKLCH	oklch(60.38% 0.088 230.1)
XYZ	xyz(18.9229, 22.6002, 42.3868)
Luminance	0.2260 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BAC #AC6342

analogous

#42AC98 #428BAC #4256AC

triadic

#428BAC #AC428B #8BAC42

tetradic

#428BAC #9842AC #AC6342 #56AC42

square

#428BAC #9842AC #AC6342 #56AC42

split-complementary

#428BAC #AC4256 #AC9842

monochromatic

#204454 #316780 #428BAC #67A7C5 #93C1D6

Accessibility & contrast

On white

3.80

#428BAC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#428BAC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BAC

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BAC	#FFFFFF	#000000	##000000
##428BAC	1.00	3.80	5.52	5.52
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A89AE

Deuteranopia (green-blind)

#6B7EAC

Tritanopia (blue-blind)

#009496

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428bac;
/* rgb */ color: rgb(66, 139, 172);
/* oklch */ color: oklch(60.4% 0.088 230.1);

Tailwind

colors: {
  custom: {
    50: '#80acc4',
    500: '#428bac',
    950: '#000000',
  },
}

SCSS

$custom: #428bac;
$custom-light: #80acc4;
$custom-dark: #000000;

JSON

{
  "hex": "#428bac",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 172
  },
  "hsl": {
    "h": 198.679,
    "s": 44.538,
    "l": 46.667
  },
  "oklch": {
    "l": 0.60383,
    "c": 0.08808,
    "h": 230.1
  },
  "luminance": 0.22602
}

Semantic roles & 50–950 ramp

primary

#428BAC

secondary

#C19A89

accent

#7C54D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428BAC

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

Preview Lab → · Contrast checker → · Palette generator →