#428B8B#428B8B

#428B8B is a mid, moderate teal. Relative luminance 0.215; OKLCH L 59.0% C 0.073 H 195.4°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#428B8B
RGB	rgb(66, 139, 139)
HSL	hsl(180, 36%, 40%)
HSV	hsv(180, 53%, 55%)
CMYK	cmyk(52.5%, 0%, 0%, 45.5%)
CIE-LAB	lab(53.48, -22.60, -6.97)
CIE-LCH	lch(53.48, 23.65, 197.13°)
OKLab	oklab(59.05% -0.0701 -0.0193)
OKLCH	oklch(59.05% 0.073 195.4)
XYZ	xyz(16.1377, 21.4861, 27.7179)
Luminance	0.2149 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428B8B #8B4242

analogous

#428B66 #428B8B #42668B

triadic

#428B8B #8B428B #8B8B42

tetradic

#428B8B #66428B #8B4242 #668B42

square

#428B8B #66428B #8B4242 #668B42

split-complementary

#428B8B #8B4266 #8B6642

monochromatic

#1B3838 #2E6262 #428B8B #5AB1B1 #83C4C4

Accessibility & contrast

On white

3.96

#428B8B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#428B8B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428B8B

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428B8B	#FFFFFF	#000000	##000000
##428B8B	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#83858B

Deuteranopia (green-blind)

#777C8C

Tritanopia (blue-blind)

#088F8B

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #428b8b;
/* rgb */ color: rgb(66, 139, 139);
/* oklch */ color: oklch(59.0% 0.073 195.4);

Tailwind

colors: {
  custom: {
    50: '#7dadac',
    500: '#428b8b',
    950: '#000000',
  },
}

SCSS

$custom: #428b8b;
$custom-light: #7dadac;
$custom-dark: #000000;

JSON

{
  "hex": "#428b8b",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 139
  },
  "hsl": {
    "h": 180,
    "s": 35.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.59046,
    "c": 0.07273,
    "h": 195.4
  },
  "luminance": 0.21488
}

Semantic roles & 50–950 ramp

primary

#428B8B

secondary

#AF7A7A

accent

#5C5CCC

background

#F7FAFA

surface

#EEF4F4

border

#C9CECE

text

#0A1010

muted

#7C7F7F

Preview Lab

Preview with #428B8B

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

Preview Lab → · Contrast checker → · Palette generator →