#428DAF#428DAF

#428DAF is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.0% C 0.090 H 230.3°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#428DAF
RGB	rgb(66, 141, 175)
HSL	hsl(199, 45%, 47%)
HSV	hsv(199, 62%, 69%)
CMYK	cmyk(62.3%, 19.4%, 0%, 31.4%)
CIE-LAB	lab(55.38, -12.75, -24.81)
CIE-LCH	lch(55.38, 27.90, 242.81°)
OKLab	oklab(61% -0.0575 -0.0693)
OKLCH	oklch(61% 0.09 230.3)
XYZ	xyz(19.5065, 23.3012, 44.0187)
Luminance	0.2330 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DAF #AF6442

analogous

#42AF9B #428DAF #4256AF

triadic

#428DAF #AF428D #8DAF42

tetradic

#428DAF #9B42AF #AF6442 #56AF42

square

#428DAF #9B42AF #AF6442 #56AF42

split-complementary

#428DAF #AF4256 #AF9B42

monochromatic

#204556 #316983 #428DAF #68A9C6 #95C2D7

Accessibility & contrast

On white

3.71

#428DAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#428DAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DAF

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DAF	#FFFFFF	#000000	##000000
##428DAF	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8BB1

Deuteranopia (green-blind)

#6D80AF

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #428daf;
/* rgb */ color: rgb(66, 141, 175);
/* oklch */ color: oklch(61.0% 0.090 230.3);

Tailwind

colors: {
  custom: {
    50: '#81aec7',
    500: '#428daf',
    950: '#000000',
  },
}

SCSS

$custom: #428daf;
$custom-light: #81aec7;
$custom-dark: #000000;

JSON

{
  "hex": "#428daf",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 175
  },
  "hsl": {
    "h": 198.716,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.60999,
    "c": 0.0901,
    "h": 230.3
  },
  "luminance": 0.23303
}

Semantic roles & 50–950 ramp

primary

#428DAF

secondary

#C29C8A

accent

#7B53D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428DAF

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

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