#428D9C#428D9C

#428D9C is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.2% C 0.077 H 212.6°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#428D9C
RGB	rgb(66, 141, 156)
HSL	hsl(190, 41%, 44%)
HSV	hsv(190, 58%, 61%)
CMYK	cmyk(57.7%, 9.6%, 0%, 38.8%)
CIE-LAB	lab(54.66, -18.69, -15.00)
CIE-LCH	lch(54.66, 23.96, 218.76°)
OKLab	oklab(60.19% -0.0651 -0.0415)
OKLCH	oklch(60.19% 0.077 212.6)
XYZ	xyz(17.7700, 22.6066, 34.8731)
Luminance	0.2261 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428D9C #9C5142

analogous

#429C7E #428D9C #42609C

triadic

#428D9C #9C428D #8D9C42

tetradic

#428D9C #7E429C #9C5142 #609C42

square

#428D9C #7E429C #9C5142 #609C42

split-complementary

#428D9C #9C4260 #9C7E42

monochromatic

#1E3F46 #306671 #428D9C #60ACBC #8BC3CE

Accessibility & contrast

On white

3.80

#428D9C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#428D9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428D9C

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428D9C	#FFFFFF	#000000	##000000
##428D9C	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)

#81899D

Deuteranopia (green-blind)

#747E9C

Tritanopia (blue-blind)

#009392

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428d9c;
/* rgb */ color: rgb(66, 141, 156);
/* oklch */ color: oklch(60.2% 0.077 212.6);

Tailwind

colors: {
  custom: {
    50: '#7faeb9',
    500: '#428d9c',
    950: '#000000',
  },
}

SCSS

$custom: #428d9c;
$custom-light: #7faeb9;
$custom-dark: #000000;

JSON

{
  "hex": "#428d9c",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 156
  },
  "hsl": {
    "h": 190,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.60189,
    "c": 0.0772,
    "h": 212.6
  },
  "luminance": 0.22608
}

Semantic roles & 50–950 ramp

primary

#428D9C

secondary

#B98A81

accent

#6C57D0

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1011

muted

#7C7F80

Preview Lab

Preview with #428D9C

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

Preview Lab → · Contrast checker → · Palette generator →