#428DD0#428DD0

#428DD0 is a light, vivid cyan. Relative luminance 0.248; OKLCH L 62.6% C 0.126 H 248.2°. Best body text is #000000 at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#428DD0
RGB	rgb(66, 141, 208)
HSL	hsl(208, 60%, 54%)
HSV	hsv(208, 68%, 82%)
CMYK	cmyk(68.3%, 32.2%, 0%, 18.4%)
CIE-LAB	lab(56.84, -1.70, -41.26)
CIE-LCH	lch(56.84, 41.30, 267.64°)
OKLab	oklab(62.63% -0.0467 -0.1169)
OKLCH	oklch(62.63% 0.126 248.2)
XYZ	xyz(23.1525, 24.7596, 63.2212)
Luminance	0.2476 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DD0 #D08542

analogous

#42D0CC #428DD0 #4246D0

triadic

#428DD0 #D0428D #8DD042

tetradic

#428DD0 #CC42D0 #D08542 #46D042

square

#428DD0 #CC42D0 #D08542 #46D042

split-complementary

#428DD0 #D04246 #D0CC42

monochromatic

#1E4E79 #2A6EAA #428DD0 #73ABDC #A4C8E8

Accessibility & contrast

On white

3.53

#428DD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.95

#428DD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DD0

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DD0	#FFFFFF	#000000	##000000
##428DD0	1.00	3.53	5.95	5.95
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.95	21.00	1.00	1.00
##000000	5.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F90D3

Deuteranopia (green-blind)

#5B82CF

Tritanopia (blue-blind)

#009DA5

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428dd0;
/* rgb */ color: rgb(66, 141, 208);
/* oklch */ color: oklch(62.6% 0.126 248.2);

Tailwind

colors: {
  custom: {
    50: '#86aede',
    500: '#428dd0',
    950: '#000000',
  },
}

SCSS

$custom: #428dd0;
$custom-light: #86aede;
$custom-dark: #000000;

JSON

{
  "hex": "#428dd0",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 208
  },
  "hsl": {
    "h": 208.31,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.62634,
    "c": 0.12586,
    "h": 248.2
  },
  "luminance": 0.24762
}

Semantic roles & 50–950 ramp

primary

#428DD0

secondary

#D5B599

accent

#8F44E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428DD0

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

Preview Lab → · Contrast checker → · Palette generator →