#428F9C#428F9C

#428F9C is a mid, moderate teal. Relative luminance 0.232; OKLCH L 60.7% C 0.078 H 210.0°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#428F9C
RGB	rgb(66, 143, 156)
HSL	hsl(189, 41%, 44%)
HSV	hsv(189, 58%, 61%)
CMYK	cmyk(57.7%, 8.3%, 0%, 38.8%)
CIE-LAB	lab(55.28, -19.75, -14.07)
CIE-LCH	lch(55.28, 24.25, 215.47°)
OKLab	oklab(60.68% -0.0673 -0.0389)
OKLCH	oklch(60.68% 0.078 210)
XYZ	xyz(18.0676, 23.2017, 34.9723)
Luminance	0.2320 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F9C #9C4F42

analogous

#429C7C #428F9C #42629C

triadic

#428F9C #9C428F #8F9C42

tetradic

#428F9C #7C429C #9C4F42 #629C42

square

#428F9C #7C429C #9C4F42 #629C42

split-complementary

#428F9C #9C4262 #9C7C42

monochromatic

#1E4046 #306871 #428F9C #60AEBC #8BC4CE

Accessibility & contrast

On white

3.72

#428F9C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#428F9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F9C

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F9C	#FFFFFF	#000000	##000000
##428F9C	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#848A9D

Deuteranopia (green-blind)

#76809C

Tritanopia (blue-blind)

#009593

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428f9c;
/* rgb */ color: rgb(66, 143, 156);
/* oklch */ color: oklch(60.7% 0.078 210.0);

Tailwind

colors: {
  custom: {
    50: '#7fb0b9',
    500: '#428f9c',
    950: '#000000',
  },
}

SCSS

$custom: #428f9c;
$custom-light: #7fb0b9;
$custom-dark: #000000;

JSON

{
  "hex": "#428f9c",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 156
  },
  "hsl": {
    "h": 188.667,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.60682,
    "c": 0.0778,
    "h": 210
  },
  "luminance": 0.23203
}

Semantic roles & 50–950 ramp

primary

#428F9C

secondary

#B98981

accent

#6957D0

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1011

muted

#7C7F80

Preview Lab

Preview with #428F9C

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

Preview Lab → · Contrast checker → · Palette generator →