#428CA5#428CA5

#428CA5 is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.3% C 0.082 H 222.9°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#428CA5
RGB	rgb(66, 140, 165)
HSL	hsl(195, 43%, 45%)
HSV	hsv(195, 60%, 65%)
CMYK	cmyk(60%, 15.2%, 0%, 35.3%)
CIE-LAB	lab(54.69, -15.38, -20.14)
CIE-LCH	lch(54.69, 25.34, 232.65°)
OKLab	oklab(60.32% -0.0603 -0.056)
OKLCH	oklch(60.32% 0.082 222.9)
XYZ	xyz(18.4137, 22.6292, 38.9875)
Luminance	0.2263 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CA5 #A55B42

analogous

#42A58D #428CA5 #425AA5

triadic

#428CA5 #A5428C #8CA542

tetradic

#428CA5 #8D42A5 #A55B42 #5AA542

square

#428CA5 #8D42A5 #A55B42 #5AA542

split-complementary

#428CA5 #A5425A #A58D42

monochromatic

#1F424E #316779 #428CA5 #63A9C1 #8FC1D2

Accessibility & contrast

On white

3.80

#428CA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#428CA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CA5

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CA5	#FFFFFF	#000000	##000000
##428CA5	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E89A6

Deuteranopia (green-blind)

#6F7EA5

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428ca5;
/* rgb */ color: rgb(66, 140, 165);
/* oklch */ color: oklch(60.3% 0.082 222.9);

Tailwind

colors: {
  custom: {
    50: '#80adbf',
    500: '#428ca5',
    950: '#000000',
  },
}

SCSS

$custom: #428ca5;
$custom-light: #80adbf;
$custom-dark: #000000;

JSON

{
  "hex": "#428ca5",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 165
  },
  "hsl": {
    "h": 195.152,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.60317,
    "c": 0.08229,
    "h": 222.9
  },
  "luminance": 0.22631
}

Semantic roles & 50–950 ramp

primary

#428CA5

secondary

#BD9485

accent

#7555D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428CA5

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

Preview Lab → · Contrast checker → · Palette generator →