#428C8F#428C8F

#428C8F is a mid, moderate teal. Relative luminance 0.219; OKLCH L 59.4% C 0.073 H 198.9°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#428C8F
RGB	rgb(66, 140, 143)
HSL	hsl(182, 37%, 41%)
HSV	hsv(182, 54%, 56%)
CMYK	cmyk(53.8%, 2.1%, 0%, 43.9%)
CIE-LAB	lab(53.92, -21.99, -8.63)
CIE-LCH	lch(53.92, 23.62, 201.42°)
OKLab	oklab(59.44% -0.0695 -0.0238)
OKLCH	oklch(59.44% 0.073 198.9)
XYZ	xyz(16.5807, 21.8960, 29.3338)
Luminance	0.2190 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C8F #8F4542

analogous

#428F6B #428C8F #42658F

triadic

#428C8F #8F428C #8C8F42

tetradic

#428C8F #6B428F #8F4542 #658F42

square

#428C8F #6B428F #8F4542 #658F42

split-complementary

#428C8F #8F4265 #8F6B42

monochromatic

#1B3A3B #2F6365 #428C8F #5BB0B3 #85C4C7

Accessibility & contrast

On white

3.90

#428C8F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#428C8F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C8F

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C8F	#FFFFFF	#000000	##000000
##428C8F	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#83868F

Deuteranopia (green-blind)

#777D8F

Tritanopia (blue-blind)

#00908D

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #428c8f;
/* rgb */ color: rgb(66, 140, 143);
/* oklch */ color: oklch(59.4% 0.073 198.9);

Tailwind

colors: {
  custom: {
    50: '#7eaeaf',
    500: '#428c8f',
    950: '#000000',
  },
}

SCSS

$custom: #428c8f;
$custom-light: #7eaeaf;
$custom-dark: #000000;

JSON

{
  "hex": "#428c8f",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 143
  },
  "hsl": {
    "h": 182.338,
    "s": 36.842,
    "l": 40.98
  },
  "oklch": {
    "l": 0.59442,
    "c": 0.07348,
    "h": 198.9
  },
  "luminance": 0.21898
}

Semantic roles & 50–950 ramp

primary

#428C8F

secondary

#B17E7B

accent

#5F5BCD

background

#F8FAFA

surface

#EFF4F4

border

#CACECE

text

#0A1010

muted

#7C7F7F

Preview Lab

Preview with #428C8F

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

Preview Lab → · Contrast checker → · Palette generator →