#428FA0#428FA0

#428FA0 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.8% C 0.079 H 214.3°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#428FA0
RGB	rgb(66, 143, 160)
HSL	hsl(191, 42%, 44%)
HSV	hsv(191, 59%, 63%)
CMYK	cmyk(58.8%, 10.6%, 0%, 37.3%)
CIE-LAB	lab(55.42, -18.54, -16.16)
CIE-LCH	lch(55.42, 24.59, 221.07°)
OKLab	oklab(60.84% -0.0657 -0.0448)
OKLCH	oklch(60.84% 0.079 214.3)
XYZ	xyz(18.4118, 23.3394, 36.7856)
Luminance	0.2334 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FA0 #A05342

analogous

#42A082 #428FA0 #4260A0

triadic

#428FA0 #A0428F #8FA042

tetradic

#428FA0 #8242A0 #A05342 #60A042

square

#428FA0 #8242A0 #A05342 #60A042

split-complementary

#428FA0 #A04260 #A08242

monochromatic

#1E4249 #306875 #428FA0 #61ADBE #8DC4D0

Accessibility & contrast

On white

3.70

#428FA0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#428FA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FA0

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FA0	#FFFFFF	#000000	##000000
##428FA0	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#838BA1

Deuteranopia (green-blind)

#7580A0

Tritanopia (blue-blind)

#009694

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428fa0;
/* rgb */ color: rgb(66, 143, 160);
/* oklch */ color: oklch(60.8% 0.079 214.3);

Tailwind

colors: {
  custom: {
    50: '#7fb0bc',
    500: '#428fa0',
    950: '#000000',
  },
}

SCSS

$custom: #428fa0;
$custom-light: #7fb0bc;
$custom-dark: #000000;

JSON

{
  "hex": "#428fa0",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 160
  },
  "hsl": {
    "h": 190.851,
    "s": 41.593,
    "l": 44.314
  },
  "oklch": {
    "l": 0.60842,
    "c": 0.07949,
    "h": 214.3
  },
  "luminance": 0.23341
}

Semantic roles & 50–950 ramp

primary

#428FA0

secondary

#BB8D83

accent

#6D56D1

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428FA0

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

Preview Lab → · Contrast checker → · Palette generator →