#428F99#428F99

#428F99 is a mid, moderate teal. Relative luminance 0.231; OKLCH L 60.6% C 0.077 H 206.7°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#428F99
RGB	rgb(66, 143, 153)
HSL	hsl(187, 40%, 43%)
HSV	hsv(187, 57%, 60%)
CMYK	cmyk(56.9%, 6.5%, 0%, 40%)
CIE-LAB	lab(55.18, -20.64, -12.50)
CIE-LCH	lch(55.18, 24.13, 211.20°)
OKLab	oklab(60.57% -0.0686 -0.0346)
OKLCH	oklch(60.57% 0.077 206.7)
XYZ	xyz(17.8167, 23.1014, 33.6509)
Luminance	0.2310 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F99 #994C42

analogous

#429978 #428F99 #426399

triadic

#428F99 #99428F #8F9942

tetradic

#428F99 #784299 #994C42 #639942

square

#428F99 #784299 #994C42 #639942

split-complementary

#428F99 #994263 #997842

monochromatic

#1D3F43 #30676E #428F99 #5EAFBA #89C4CC

Accessibility & contrast

On white

3.74

#428F99 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#428F99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F99

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F99	#FFFFFF	#000000	##000000
##428F99	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#848A9A

Deuteranopia (green-blind)

#778099

Tritanopia (blue-blind)

#009592

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428f99;
/* rgb */ color: rgb(66, 143, 153);
/* oklch */ color: oklch(60.6% 0.077 206.7);

Tailwind

colors: {
  custom: {
    50: '#7fb0b7',
    500: '#428f99',
    950: '#000000',
  },
}

SCSS

$custom: #428f99;
$custom-light: #7fb0b7;
$custom-dark: #000000;

JSON

{
  "hex": "#428f99",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 153
  },
  "hsl": {
    "h": 186.897,
    "s": 39.726,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60565,
    "c": 0.07685,
    "h": 206.7
  },
  "luminance": 0.23103
}

Semantic roles & 50–950 ramp

primary

#428F99

secondary

#B78680

accent

#6658D0

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1011

muted

#7C7F80

Preview Lab

Preview with #428F99

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

Preview Lab → · Contrast checker → · Palette generator →