#428C8B#428C8B

#428C8B is a mid, moderate teal. Relative luminance 0.218; OKLCH L 59.3% C 0.074 H 194.2°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#428C8B
RGB	rgb(66, 140, 139)
HSL	hsl(179, 36%, 40%)
HSV	hsv(179, 53%, 55%)
CMYK	cmyk(52.9%, 0%, 0.7%, 45.1%)
CIE-LAB	lab(53.79, -23.12, -6.50)
CIE-LCH	lch(53.79, 24.02, 195.71°)
OKLab	oklab(59.3% -0.0713 -0.018)
OKLCH	oklch(59.3% 0.074 194.2)
XYZ	xyz(16.2831, 21.7770, 27.7664)
Luminance	0.2178 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C8B #8C4243

analogous

#428C66 #428C8B #42688C

triadic

#428C8B #8B428C #8C8B42

tetradic

#428C8B #66428C #8C4243 #688C42

square

#428C8B #66428C #8C4243 #688C42

split-complementary

#428C8B #8C4268 #8C6642

monochromatic

#1B3938 #2E6262 #428C8B #5AB1B0 #84C5C4

Accessibility & contrast

On white

3.92

#428C8B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#428C8B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C8B

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C8B	#FFFFFF	#000000	##000000
##428C8B	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#84868B

Deuteranopia (green-blind)

#787D8C

Tritanopia (blue-blind)

#07908B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #428c8b;
/* rgb */ color: rgb(66, 140, 139);
/* oklch */ color: oklch(59.3% 0.074 194.2);

Tailwind

colors: {
  custom: {
    50: '#7daeac',
    500: '#428c8b',
    950: '#000000',
  },
}

SCSS

$custom: #428c8b;
$custom-light: #7daeac;
$custom-dark: #000000;

JSON

{
  "hex": "#428c8b",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 139
  },
  "hsl": {
    "h": 179.189,
    "s": 35.922,
    "l": 40.392
  },
  "oklch": {
    "l": 0.59297,
    "c": 0.07355,
    "h": 194.2
  },
  "luminance": 0.21778
}

Semantic roles & 50–950 ramp

primary

#428C8B

secondary

#B07A7B

accent

#5C5DCC

background

#F7FAFA

surface

#EEF4F4

border

#C9CECE

text

#0A1010

muted

#7C7F7F

Preview Lab

Preview with #428C8B

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

Preview Lab → · Contrast checker → · Palette generator →