#428EAF#428EAF

#428EAF is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.2% C 0.090 H 229.2°. Best body text is #000000 at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#428EAF
RGB	rgb(66, 142, 175)
HSL	hsl(198, 45%, 47%)
HSV	hsv(198, 62%, 69%)
CMYK	cmyk(62.3%, 18.9%, 0%, 31.4%)
CIE-LAB	lab(55.68, -13.30, -24.35)
CIE-LCH	lch(55.68, 27.75, 241.35°)
OKLab	oklab(61.24% -0.0586 -0.068)
OKLCH	oklch(61.24% 0.09 229.2)
XYZ	xyz(19.6546, 23.5974, 44.0681)
Luminance	0.2360 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EAF #AF6342

analogous

#42AF99 #428EAF #4258AF

triadic

#428EAF #AF428E #8EAF42

tetradic

#428EAF #9942AF #AF6342 #58AF42

square

#428EAF #9942AF #AF6342 #58AF42

split-complementary

#428EAF #AF4258 #AF9942

monochromatic

#204656 #316A83 #428EAF #68AAC6 #95C3D7

Accessibility & contrast

On white

3.67

#428EAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.72

#428EAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EAF

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EAF	#FFFFFF	#000000	##000000
##428EAF	1.00	3.67	5.72	5.72
#FFFFFF	3.67	1.00	21.00	21.00
#000000	5.72	21.00	1.00	1.00
##000000	5.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8CB1

Deuteranopia (green-blind)

#6E80AF

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428eaf;
/* rgb */ color: rgb(66, 142, 175);
/* oklch */ color: oklch(61.2% 0.090 229.2);

Tailwind

colors: {
  custom: {
    50: '#81afc7',
    500: '#428eaf',
    950: '#000000',
  },
}

SCSS

$custom: #428eaf;
$custom-light: #81afc7;
$custom-dark: #000000;

JSON

{
  "hex": "#428eaf",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 175
  },
  "hsl": {
    "h": 198.165,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.61239,
    "c": 0.08979,
    "h": 229.2
  },
  "luminance": 0.23599
}

Semantic roles & 50–950 ramp

primary

#428EAF

secondary

#C29B8A

accent

#7A53D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428EAF

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

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