#428AA5#428AA5

#428AA5 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.8% C 0.083 H 225.3°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#428AA5
RGB	rgb(66, 138, 165)
HSL	hsl(196, 43%, 45%)
HSV	hsv(196, 60%, 65%)
CMYK	cmyk(60%, 16.4%, 0%, 35.3%)
CIE-LAB	lab(54.08, -14.28, -21.08)
CIE-LCH	lch(54.08, 25.46, 235.88°)
OKLab	oklab(59.83% -0.058 -0.0587)
OKLCH	oklch(59.83% 0.083 225.3)
XYZ	xyz(18.1241, 22.0501, 38.8910)
Luminance	0.2205 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AA5 #A55D42

analogous

#42A58F #428AA5 #4258A5

triadic

#428AA5 #A5428A #8AA542

tetradic

#428AA5 #8F42A5 #A55D42 #58A542

square

#428AA5 #8F42A5 #A55D42 #58A542

split-complementary

#428AA5 #A54258 #A58F42

monochromatic

#1F414E #316579 #428AA5 #63A7C1 #8FC0D2

Accessibility & contrast

On white

3.88

#428AA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#428AA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AA5

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AA5	#FFFFFF	#000000	##000000
##428AA5	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B87A6

Deuteranopia (green-blind)

#6D7DA5

Tritanopia (blue-blind)

#009293

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #428aa5;
/* rgb */ color: rgb(66, 138, 165);
/* oklch */ color: oklch(59.8% 0.083 225.3);

Tailwind

colors: {
  custom: {
    50: '#80acbf',
    500: '#428aa5',
    950: '#000000',
  },
}

SCSS

$custom: #428aa5;
$custom-light: #80acbf;
$custom-dark: #000000;

JSON

{
  "hex": "#428aa5",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 165
  },
  "hsl": {
    "h": 196.364,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.59831,
    "c": 0.08251,
    "h": 225.3
  },
  "luminance": 0.22052
}

Semantic roles & 50–950 ramp

primary

#428AA5

secondary

#BD9585

accent

#7755D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428AA5

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

Preview Lab → · Contrast checker → · Palette generator →