#428DA5#428DA5

#428DA5 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.6% C 0.082 H 221.7°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#428DA5
RGB	rgb(66, 141, 165)
HSL	hsl(195, 43%, 45%)
HSV	hsv(195, 60%, 65%)
CMYK	cmyk(60%, 14.5%, 0%, 35.3%)
CIE-LAB	lab(54.99, -15.92, -19.68)
CIE-LCH	lch(54.99, 25.31, 231.02°)
OKLab	oklab(60.56% -0.0614 -0.0547)
OKLCH	oklch(60.56% 0.082 221.7)
XYZ	xyz(18.5605, 22.9228, 39.0364)
Luminance	0.2293 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DA5 #A55A42

analogous

#42A58B #428DA5 #425CA5

triadic

#428DA5 #A5428D #8DA542

tetradic

#428DA5 #8B42A5 #A55A42 #5CA542

square

#428DA5 #8B42A5 #A55A42 #5CA542

split-complementary

#428DA5 #A5425C #A58B42

monochromatic

#1F424E #316879 #428DA5 #63AAC1 #8FC2D2

Accessibility & contrast

On white

3.76

#428DA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#428DA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DA5

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DA5	#FFFFFF	#000000	##000000
##428DA5	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8AA6

Deuteranopia (green-blind)

#707FA5

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428da5;
/* rgb */ color: rgb(66, 141, 165);
/* oklch */ color: oklch(60.6% 0.082 221.7);

Tailwind

colors: {
  custom: {
    50: '#80aebf',
    500: '#428da5',
    950: '#000000',
  },
}

SCSS

$custom: #428da5;
$custom-light: #80aebf;
$custom-dark: #000000;

JSON

{
  "hex": "#428da5",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 165
  },
  "hsl": {
    "h": 194.545,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.6056,
    "c": 0.08224,
    "h": 221.7
  },
  "luminance": 0.22925
}

Semantic roles & 50–950 ramp

primary

#428DA5

secondary

#BD9385

accent

#7455D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428DA5

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

Preview Lab → · Contrast checker → · Palette generator →