#428F9D#428F9D

#428F9D is a mid, moderate teal. Relative luminance 0.232; OKLCH L 60.7% C 0.078 H 211.1°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#428F9D
RGB	rgb(66, 143, 157)
HSL	hsl(189, 41%, 44%)
HSV	hsv(189, 58%, 62%)
CMYK	cmyk(58%, 8.9%, 0%, 38.4%)
CIE-LAB	lab(55.31, -19.45, -14.59)
CIE-LCH	lch(55.31, 24.32, 216.88°)
OKLab	oklab(60.72% -0.0669 -0.0404)
OKLCH	oklch(60.72% 0.078 211.1)
XYZ	xyz(18.1526, 23.2357, 35.4201)
Luminance	0.2324 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F9D #9D5042

analogous

#429D7D #428F9D #42619D

triadic

#428F9D #9D428F #8F9D42

tetradic

#428F9D #7D429D #9D5042 #619D42

square

#428F9D #7D429D #9D5042 #619D42

split-complementary

#428F9D #9D4261 #9D7D42

monochromatic

#1E4147 #306872 #428F9D #60AEBC #8BC4CE

Accessibility & contrast

On white

3.72

#428F9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#428F9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F9D

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F9D	#FFFFFF	#000000	##000000
##428F9D	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#838A9E

Deuteranopia (green-blind)

#76809D

Tritanopia (blue-blind)

#009593

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428f9d;
/* rgb */ color: rgb(66, 143, 157);
/* oklch */ color: oklch(60.7% 0.078 211.1);

Tailwind

colors: {
  custom: {
    50: '#7fb0ba',
    500: '#428f9d',
    950: '#000000',
  },
}

SCSS

$custom: #428f9d;
$custom-light: #7fb0ba;
$custom-dark: #000000;

JSON

{
  "hex": "#428f9d",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 157
  },
  "hsl": {
    "h": 189.231,
    "s": 40.807,
    "l": 43.725
  },
  "oklch": {
    "l": 0.60722,
    "c": 0.07818,
    "h": 211.1
  },
  "luminance": 0.23237
}

Semantic roles & 50–950 ramp

primary

#428F9D

secondary

#B98A82

accent

#6A57D1

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1011

muted

#7C7F80

Preview Lab

Preview with #428F9D

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

Preview Lab → · Contrast checker → · Palette generator →