#428A8F#428A8F

#428A8F is a mid, moderate teal. Relative luminance 0.213; OKLCH L 58.9% C 0.072 H 201.5°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#428A8F
RGB	rgb(66, 138, 143)
HSL	hsl(184, 37%, 41%)
HSV	hsv(184, 54%, 56%)
CMYK	cmyk(53.8%, 3.5%, 0%, 43.9%)
CIE-LAB	lab(53.29, -20.94, -9.56)
CIE-LCH	lch(53.29, 23.02, 204.53°)
OKLab	oklab(58.94% -0.0672 -0.0264)
OKLCH	oklch(58.94% 0.072 201.5)
XYZ	xyz(16.2912, 21.3169, 29.2373)
Luminance	0.2132 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428A8F #8F4742

analogous

#428F6D #428A8F #42638F

triadic

#428A8F #8F428A #8A8F42

tetradic

#428A8F #6D428F #8F4742 #638F42

square

#428A8F #6D428F #8F4742 #638F42

split-complementary

#428A8F #8F4263 #8F6D42

monochromatic

#1B393B #2F6265 #428A8F #5BAEB3 #85C2C7

Accessibility & contrast

On white

3.99

#428A8F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#428A8F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428A8F

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428A8F	#FFFFFF	#000000	##000000
##428A8F	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81858F

Deuteranopia (green-blind)

#747B8F

Tritanopia (blue-blind)

#008F8B

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #428a8f;
/* rgb */ color: rgb(66, 138, 143);
/* oklch */ color: oklch(58.9% 0.072 201.5);

Tailwind

colors: {
  custom: {
    50: '#7eacaf',
    500: '#428a8f',
    950: '#000000',
  },
}

SCSS

$custom: #428a8f;
$custom-light: #7eacaf;
$custom-dark: #000000;

JSON

{
  "hex": "#428a8f",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 143
  },
  "hsl": {
    "h": 183.896,
    "s": 36.842,
    "l": 40.98
  },
  "oklch": {
    "l": 0.58941,
    "c": 0.07216,
    "h": 201.5
  },
  "luminance": 0.21318
}

Semantic roles & 50–950 ramp

primary

#428A8F

secondary

#B17F7B

accent

#625BCD

background

#F8FAFA

surface

#EFF4F4

border

#CACECE

text

#0A1010

muted

#7C7F7F

Preview Lab

Preview with #428A8F

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

Preview Lab → · Contrast checker → · Palette generator →