#428CA0#428CA0

#428CA0 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.1% C 0.079 H 218.0°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#428CA0
RGB	rgb(66, 140, 160)
HSL	hsl(193, 42%, 44%)
HSV	hsv(193, 59%, 63%)
CMYK	cmyk(58.8%, 12.5%, 0%, 37.3%)
CIE-LAB	lab(54.50, -16.93, -17.55)
CIE-LCH	lch(54.50, 24.39, 226.04°)
OKLab	oklab(60.11% -0.0623 -0.0487)
OKLCH	oklch(60.11% 0.079 218)
XYZ	xyz(17.9675, 22.4507, 36.6374)
Luminance	0.2245 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CA0 #A05642

analogous

#42A085 #428CA0 #425DA0

triadic

#428CA0 #A0428C #8CA042

tetradic

#428CA0 #8542A0 #A05642 #5DA042

square

#428CA0 #8542A0 #A05642 #5DA042

split-complementary

#428CA0 #A0425D #A08542

monochromatic

#1E4049 #306675 #428CA0 #61AABE #8DC2D0

Accessibility & contrast

On white

3.82

#428CA0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#428CA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CA0

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CA0	#FFFFFF	#000000	##000000
##428CA0	1.00	3.82	5.49	5.49
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F88A1

Deuteranopia (green-blind)

#717EA0

Tritanopia (blue-blind)

#009392

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #428ca0;
/* rgb */ color: rgb(66, 140, 160);
/* oklch */ color: oklch(60.1% 0.079 218.0);

Tailwind

colors: {
  custom: {
    50: '#7fadbc',
    500: '#428ca0',
    950: '#000000',
  },
}

SCSS

$custom: #428ca0;
$custom-light: #7fadbc;
$custom-dark: #000000;

JSON

{
  "hex": "#428ca0",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 160
  },
  "hsl": {
    "h": 192.766,
    "s": 41.593,
    "l": 44.314
  },
  "oklch": {
    "l": 0.60106,
    "c": 0.07905,
    "h": 218
  },
  "luminance": 0.22452
}

Semantic roles & 50–950 ramp

primary

#428CA0

secondary

#BB8F83

accent

#7156D1

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428CA0

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

Preview Lab → · Contrast checker → · Palette generator →