#428DC2#428DC2

#428DC2 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.9% C 0.109 H 242.3°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#428DC2
RGB	rgb(66, 141, 194)
HSL	hsl(205, 51%, 51%)
HSV	hsv(205, 66%, 76%)
CMYK	cmyk(66%, 27.3%, 0%, 23.9%)
CIE-LAB	lab(56.19, -6.48, -34.38)
CIE-LCH	lch(56.19, 34.98, 259.33°)
OKLab	oklab(61.91% -0.0509 -0.0969)
OKLCH	oklch(61.91% 0.109 242.3)
XYZ	xyz(21.5055, 24.1008, 54.5470)
Luminance	0.2410 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DC2 #C27742

analogous

#42C2B7 #428DC2 #424DC2

triadic

#428DC2 #C2428D #8DC242

tetradic

#428DC2 #B742C2 #C27742 #4DC242

square

#428DC2 #B742C2 #C27742 #4DC242

split-complementary

#428DC2 #C2424D #C2B742

monochromatic

#224B68 #316C96 #428DC2 #70A9D1 #9FC5E0

Accessibility & contrast

On white

3.61

#428DC2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#428DC2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DC2

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DC2	#FFFFFF	#000000	##000000
##428DC2	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758EC4

Deuteranopia (green-blind)

#6481C1

Tritanopia (blue-blind)

#009A9F

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428dc2;
/* rgb */ color: rgb(66, 141, 194);
/* oklch */ color: oklch(61.9% 0.109 242.3);

Tailwind

colors: {
  custom: {
    50: '#84aed4',
    500: '#428dc2',
    950: '#000000',
  },
}

SCSS

$custom: #428dc2;
$custom-light: #84aed4;
$custom-dark: #000000;

JSON

{
  "hex": "#428dc2",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 194
  },
  "hsl": {
    "h": 204.844,
    "s": 51.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.61906,
    "c": 0.10944,
    "h": 242.3
  },
  "luminance": 0.24103
}

Semantic roles & 50–950 ramp

primary

#428DC2

secondary

#CCAB94

accent

#884DDB

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428DC2

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

Preview Lab → · Contrast checker → · Palette generator →