#428FC6#428FC6

#428FC6 is a light, moderate cyan. Relative luminance 0.249; OKLCH L 62.6% C 0.113 H 242.6°. Best body text is #000000 at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#428FC6
RGB	rgb(66, 143, 198)
HSL	hsl(205, 54%, 52%)
HSV	hsv(205, 67%, 78%)
CMYK	cmyk(66.7%, 27.8%, 0%, 22.4%)
CIE-LAB	lab(56.96, -6.28, -35.44)
CIE-LCH	lch(56.96, 35.99, 259.96°)
OKLab	oklab(62.57% -0.0517 -0.0999)
OKLCH	oklch(62.57% 0.113 242.6)
XYZ	xyz(22.2584, 24.8781, 57.0440)
Luminance	0.2488 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FC6 #C67942

analogous

#42C6BB #428FC6 #424DC6

triadic

#428FC6 #C6428F #8FC642

tetradic

#428FC6 #BB42C6 #C67942 #4DC642

square

#428FC6 #BB42C6 #C67942 #4DC642

split-complementary

#428FC6 #C6424D #C6BB42

monochromatic

#214D6D #2F6E9C #428FC6 #71ABD4 #A0C7E2

Accessibility & contrast

On white

3.51

#428FC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.98

#428FC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FC6

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FC6	#FFFFFF	#000000	##000000
##428FC6	1.00	3.51	5.98	5.98
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.98	21.00	1.00	1.00
##000000	5.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7690C8

Deuteranopia (green-blind)

#6483C5

Tritanopia (blue-blind)

#009CA2

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #428fc6;
/* rgb */ color: rgb(66, 143, 198);
/* oklch */ color: oklch(62.6% 0.113 242.6);

Tailwind

colors: {
  custom: {
    50: '#84afd7',
    500: '#428fc6',
    950: '#000000',
  },
}

SCSS

$custom: #428fc6;
$custom-light: #84afd7;
$custom-dark: #000000;

JSON

{
  "hex": "#428fc6",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 198
  },
  "hsl": {
    "h": 205,
    "s": 53.659,
    "l": 51.765
  },
  "oklch": {
    "l": 0.62573,
    "c": 0.11253,
    "h": 242.6
  },
  "luminance": 0.2488
}

Semantic roles & 50–950 ramp

primary

#428FC6

secondary

#CFAD95

accent

#884BDD

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428FC6

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

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