#428CCA#428CCA

#428CCA is a light, moderate cyan. Relative luminance 0.242; OKLCH L 62.1% C 0.119 H 246.6°. Best body text is #000000 at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#428CCA
RGB	rgb(66, 140, 202)
HSL	hsl(207, 56%, 53%)
HSV	hsv(207, 67%, 79%)
CMYK	cmyk(67.3%, 30.7%, 0%, 20.8%)
CIE-LAB	lab(56.26, -3.18, -38.79)
CIE-LCH	lch(56.26, 38.92, 265.31°)
OKLab	oklab(62.09% -0.0474 -0.1097)
OKLCH	oklch(62.09% 0.119 246.6)
XYZ	xyz(22.2815, 24.1764, 59.3579)
Luminance	0.2418 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CCA #CA8042

analogous

#42CAC4 #428CCA #4248CA

triadic

#428CCA #CA428C #8CCA42

tetradic

#428CCA #C442CA #CA8042 #48CA42

square

#428CCA #C442CA #CA8042 #48CA42

split-complementary

#428CCA #CA4248 #CAC442

monochromatic

#204C72 #2D6DA2 #428CCA #72A9D7 #A2C6E5

Accessibility & contrast

On white

3.60

#428CCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.84

#428CCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CCA

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CCA	#FFFFFF	#000000	##000000
##428CCA	1.00	3.60	5.84	5.84
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.84	21.00	1.00	1.00
##000000	5.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#708ECD

Deuteranopia (green-blind)

#5E81C9

Tritanopia (blue-blind)

#009BA2

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428cca;
/* rgb */ color: rgb(66, 140, 202);
/* oklch */ color: oklch(62.1% 0.119 246.6);

Tailwind

colors: {
  custom: {
    50: '#85adda',
    500: '#428cca',
    950: '#000000',
  },
}

SCSS

$custom: #428cca;
$custom-light: #85adda;
$custom-dark: #000000;

JSON

{
  "hex": "#428cca",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 202
  },
  "hsl": {
    "h": 207.353,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.62087,
    "c": 0.11949,
    "h": 246.6
  },
  "luminance": 0.24179
}

Semantic roles & 50–950 ramp

primary

#428CCA

secondary

#D1B196

accent

#8D48DF

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428CCA

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

Preview Lab → · Contrast checker → · Palette generator →