#428FCA#428FCA

#428FCA is a light, moderate cyan. Relative luminance 0.251; OKLCH L 62.8% C 0.117 H 244.5°. Best body text is #000000 at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#428FCA
RGB	rgb(66, 143, 202)
HSL	hsl(206, 56%, 53%)
HSV	hsv(206, 67%, 79%)
CMYK	cmyk(67.3%, 29.2%, 0%, 20.8%)
CIE-LAB	lab(57.14, -4.92, -37.42)
CIE-LCH	lch(57.14, 37.74, 262.51°)
OKLab	oklab(62.78% -0.0505 -0.1056)
OKLCH	oklch(62.78% 0.117 244.5)
XYZ	xyz(22.7259, 25.0650, 59.5060)
Luminance	0.2507 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FCA #CA7D42

analogous

#42CAC1 #428FCA #424BCA

triadic

#428FCA #CA428F #8FCA42

tetradic

#428FCA #C142CA #CA7D42 #4BCA42

square

#428FCA #C142CA #CA7D42 #4BCA42

split-complementary

#428FCA #CA424B #CAC142

monochromatic

#204E72 #2D6FA2 #428FCA #72ABD7 #A2C8E5

Accessibility & contrast

On white

3.49

#428FCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.01

#428FCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FCA

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FCA	#FFFFFF	#000000	##000000
##428FCA	1.00	3.49	6.01	6.01
#FFFFFF	3.49	1.00	21.00	21.00
#000000	6.01	21.00	1.00	1.00
##000000	6.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7590CD

Deuteranopia (green-blind)

#6283C9

Tritanopia (blue-blind)

#009DA4

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #428fca;
/* rgb */ color: rgb(66, 143, 202);
/* oklch */ color: oklch(62.8% 0.117 244.5);

Tailwind

colors: {
  custom: {
    50: '#85afda',
    500: '#428fca',
    950: '#000000',
  },
}

SCSS

$custom: #428fca;
$custom-light: #85afda;
$custom-dark: #000000;

JSON

{
  "hex": "#428fca",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 202
  },
  "hsl": {
    "h": 206.029,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.62777,
    "c": 0.11709,
    "h": 244.5
  },
  "luminance": 0.25067
}

Semantic roles & 50–950 ramp

primary

#428FCA

secondary

#D1B096

accent

#8A48DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428FCA

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

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