#428EBF#428EBF

#428EBF is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 62.0% C 0.105 H 239.9°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#428EBF
RGB	rgb(66, 142, 191)
HSL	hsl(204, 49%, 50%)
HSV	hsv(204, 65%, 75%)
CMYK	cmyk(65.4%, 25.7%, 0%, 25.1%)
CIE-LAB	lab(56.35, -8.06, -32.43)
CIE-LCH	lch(56.35, 33.41, 256.05°)
OKLab	oklab(61.99% -0.053 -0.0912)
OKLCH	oklch(61.99% 0.105 239.9)
XYZ	xyz(21.3201, 24.2636, 52.8399)
Luminance	0.2427 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EBF #BF7342

analogous

#42BFB1 #428EBF #424FBF

triadic

#428EBF #BF428E #8EBF42

tetradic

#428EBF #B142BF #BF7342 #4FBF42

square

#428EBF #B142BF #BF7342 #4FBF42

split-complementary

#428EBF #BF424F #BFB142

monochromatic

#224A65 #326C92 #428EBF #70A9CE #9DC5DE

Accessibility & contrast

On white

3.59

#428EBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.85

#428EBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EBF

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EBF	#FFFFFF	#000000	##000000
##428EBF	1.00	3.59	5.85	5.85
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.85	21.00	1.00	1.00
##000000	5.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788EC1

Deuteranopia (green-blind)

#6682BE

Tritanopia (blue-blind)

#009A9F

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428ebf;
/* rgb */ color: rgb(66, 142, 191);
/* oklch */ color: oklch(62.0% 0.105 239.9);

Tailwind

colors: {
  custom: {
    50: '#83afd2',
    500: '#428ebf',
    950: '#000000',
  },
}

SCSS

$custom: #428ebf;
$custom-light: #83afd2;
$custom-dark: #000000;

JSON

{
  "hex": "#428ebf",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 191
  },
  "hsl": {
    "h": 203.52,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.61991,
    "c": 0.10547,
    "h": 239.9
  },
  "luminance": 0.24266
}

Semantic roles & 50–950 ramp

primary

#428EBF

secondary

#CAA893

accent

#854FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428EBF

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

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