#428AAF#428AAF

#428AAF is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.3% C 0.091 H 233.5°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#428AAF
RGB	rgb(66, 138, 175)
HSL	hsl(200, 45%, 47%)
HSV	hsv(200, 62%, 69%)
CMYK	cmyk(62.3%, 21.1%, 0%, 31.4%)
CIE-LAB	lab(54.48, -11.07, -26.21)
CIE-LCH	lch(54.48, 28.45, 247.09°)
OKLab	oklab(60.28% -0.0542 -0.0733)
OKLCH	oklch(60.28% 0.091 233.5)
XYZ	xyz(19.0701, 22.4285, 43.8733)
Luminance	0.2243 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AAF #AF6742

analogous

#42AF9E #428AAF #4254AF

triadic

#428AAF #AF428A #8AAF42

tetradic

#428AAF #9E42AF #AF6742 #54AF42

square

#428AAF #9E42AF #AF6742 #54AF42

split-complementary

#428AAF #AF4254 #AF9E42

monochromatic

#204456 #316783 #428AAF #68A6C6 #95C0D7

Accessibility & contrast

On white

3.83

#428AAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#428AAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AAF

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AAF	#FFFFFF	#000000	##000000
##428AAF	1.00	3.83	5.49	5.49
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7889B1

Deuteranopia (green-blind)

#697DAE

Tritanopia (blue-blind)

#009496

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #428aaf;
/* rgb */ color: rgb(66, 138, 175);
/* oklch */ color: oklch(60.3% 0.091 233.5);

Tailwind

colors: {
  custom: {
    50: '#81acc7',
    500: '#428aaf',
    950: '#000000',
  },
}

SCSS

$custom: #428aaf;
$custom-light: #81acc7;
$custom-dark: #000000;

JSON

{
  "hex": "#428aaf",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 175
  },
  "hsl": {
    "h": 200.367,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.6028,
    "c": 0.09122,
    "h": 233.5
  },
  "luminance": 0.2243
}

Semantic roles & 50–950 ramp

primary

#428AAF

secondary

#C29D8A

accent

#7F53D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428AAF

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

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