#428AA3#428AA3

#428AA3 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.7% C 0.081 H 223.5°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#428AA3
RGB	rgb(66, 138, 163)
HSL	hsl(195, 42%, 45%)
HSV	hsv(195, 60%, 64%)
CMYK	cmyk(59.5%, 15.3%, 0%, 36.1%)
CIE-LAB	lab(54.00, -14.91, -20.04)
CIE-LCH	lch(54.00, 24.98, 233.36°)
OKLab	oklab(59.74% -0.0588 -0.0557)
OKLCH	oklch(59.74% 0.081 223.5)
XYZ	xyz(17.9435, 21.9778, 37.9398)
Luminance	0.2198 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AA3 #A35B42

analogous

#42A38C #428AA3 #4259A3

triadic

#428AA3 #A3428A #8AA342

tetradic

#428AA3 #8C42A3 #A35B42 #59A342

square

#428AA3 #8C42A3 #A35B42 #59A342

split-complementary

#428AA3 #A34259 #A38C42

monochromatic

#1F404C #306577 #428AA3 #63A8C0 #8EC0D1

Accessibility & contrast

On white

3.89

#428AA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#428AA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AA3

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AA3	#FFFFFF	#000000	##000000
##428AA3	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C87A4

Deuteranopia (green-blind)

#6E7DA3

Tritanopia (blue-blind)

#009292

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #428aa3;
/* rgb */ color: rgb(66, 138, 163);
/* oklch */ color: oklch(59.7% 0.081 223.5);

Tailwind

colors: {
  custom: {
    50: '#7facbe',
    500: '#428aa3',
    950: '#000000',
  },
}

SCSS

$custom: #428aa3;
$custom-light: #7facbe;
$custom-dark: #000000;

JSON

{
  "hex": "#428aa3",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 163
  },
  "hsl": {
    "h": 195.464,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.59744,
    "c": 0.08102,
    "h": 223.5
  },
  "luminance": 0.2198
}

Semantic roles & 50–950 ramp

primary

#428AA3

secondary

#BC9384

accent

#7656D2

background

#F8FAFB

surface

#EFF4F6

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428AA3

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

Preview Lab → · Contrast checker → · Palette generator →