#428EAD#428EAD

#428EAD is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 61.2% C 0.088 H 227.6°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#428EAD
RGB	rgb(66, 142, 173)
HSL	hsl(197, 45%, 47%)
HSV	hsv(197, 62%, 68%)
CMYK	cmyk(61.8%, 17.9%, 0%, 32.2%)
CIE-LAB	lab(55.60, -13.94, -23.33)
CIE-LCH	lch(55.60, 27.18, 239.13°)
OKLab	oklab(61.15% -0.0594 -0.0651)
OKLCH	oklch(61.15% 0.088 227.6)
XYZ	xyz(19.4596, 23.5194, 43.0412)
Luminance	0.2352 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EAD #AD6142

analogous

#42AD97 #428EAD #4259AD

triadic

#428EAD #AD428E #8EAD42

tetradic

#428EAD #9742AD #AD6142 #59AD42

square

#428EAD #9742AD #AD6142 #59AD42

split-complementary

#428EAD #AD4259 #AD9742

monochromatic

#204554 #316A81 #428EAD #67AAC5 #93C3D6

Accessibility & contrast

On white

3.68

#428EAD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.70

#428EAD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EAD

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EAD	#FFFFFF	#000000	##000000
##428EAD	1.00	3.68	5.70	5.70
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.70	21.00	1.00	1.00
##000000	5.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8CAF

Deuteranopia (green-blind)

#6F80AD

Tritanopia (blue-blind)

#009798

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428ead;
/* rgb */ color: rgb(66, 142, 173);
/* oklch */ color: oklch(61.2% 0.088 227.6);

Tailwind

colors: {
  custom: {
    50: '#81afc5',
    500: '#428ead',
    950: '#000000',
  },
}

SCSS

$custom: #428ead;
$custom-light: #81afc5;
$custom-dark: #000000;

JSON

{
  "hex": "#428ead",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 173
  },
  "hsl": {
    "h": 197.383,
    "s": 44.77,
    "l": 46.863
  },
  "oklch": {
    "l": 0.6115,
    "c": 0.08811,
    "h": 227.6
  },
  "luminance": 0.23521
}

Semantic roles & 50–950 ramp

primary

#428EAD

secondary

#C19A89

accent

#7953D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428EAD

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

Preview Lab → · Contrast checker → · Palette generator →