#428DA8#428DA8

#428DA8 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.7% C 0.084 H 224.5°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#428DA8
RGB	rgb(66, 141, 168)
HSL	hsl(196, 44%, 46%)
HSV	hsv(196, 61%, 66%)
CMYK	cmyk(60.7%, 16.1%, 0%, 34.1%)
CIE-LAB	lab(55.11, -14.98, -21.23)
CIE-LCH	lch(55.11, 25.98, 234.79°)
OKLab	oklab(60.69% -0.0602 -0.0591)
OKLCH	oklch(60.69% 0.084 224.5)
XYZ	xyz(18.8367, 23.0333, 40.4914)
Luminance	0.2303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DA8 #A85D42

analogous

#42A890 #428DA8 #425AA8

triadic

#428DA8 #A8428D #8DA842

tetradic

#428DA8 #9042A8 #A85D42 #5AA842

square

#428DA8 #9042A8 #A85D42 #5AA842

split-complementary

#428DA8 #A8425A #A89042

monochromatic

#1F4350 #31687C #428DA8 #65AAC2 #91C2D4

Accessibility & contrast

On white

3.75

#428DA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#428DA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DA8

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DA8	#FFFFFF	#000000	##000000
##428DA8	1.00	3.75	5.61	5.61
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8AA9

Deuteranopia (green-blind)

#6F7FA8

Tritanopia (blue-blind)

#009596

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428da8;
/* rgb */ color: rgb(66, 141, 168);
/* oklch */ color: oklch(60.7% 0.084 224.5);

Tailwind

colors: {
  custom: {
    50: '#80aec2',
    500: '#428da8',
    950: '#000000',
  },
}

SCSS

$custom: #428da8;
$custom-light: #80aec2;
$custom-dark: #000000;

JSON

{
  "hex": "#428da8",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 168
  },
  "hsl": {
    "h": 195.882,
    "s": 43.59,
    "l": 45.882
  },
  "oklch": {
    "l": 0.60689,
    "c": 0.08438,
    "h": 224.5
  },
  "luminance": 0.23035
}

Semantic roles & 50–950 ramp

primary

#428DA8

secondary

#BF9687

accent

#7654D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428DA8

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

Preview Lab → · Contrast checker → · Palette generator →