#428DC0#428DC0

#428DC0 is a mid, moderate cyan. Relative luminance 0.240; OKLCH L 61.8% C 0.107 H 241.2°. Best body text is #000000 at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#428DC0
RGB	rgb(66, 141, 192)
HSL	hsl(204, 50%, 51%)
HSV	hsv(204, 66%, 75%)
CMYK	cmyk(65.6%, 26.6%, 0%, 24.7%)
CIE-LAB	lab(56.10, -7.15, -33.38)
CIE-LCH	lch(56.10, 34.14, 257.91°)
OKLab	oklab(61.81% -0.0516 -0.094)
OKLCH	oklch(61.81% 0.107 241.2)
XYZ	xyz(21.2824, 24.0116, 53.3720)
Luminance	0.2401 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DC0 #C07542

analogous

#42C0B4 #428DC0 #424EC0

triadic

#428DC0 #C0428D #8DC042

tetradic

#428DC0 #B442C0 #C07542 #4EC042

square

#428DC0 #B442C0 #C07542 #4EC042

split-complementary

#428DC0 #C0424E #C0B442

monochromatic

#224A66 #316C94 #428DC0 #70A9CF #9EC4DF

Accessibility & contrast

On white

3.62

#428DC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.80

#428DC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DC0

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DC0	#FFFFFF	#000000	##000000
##428DC0	1.00	3.62	5.80	5.80
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.80	21.00	1.00	1.00
##000000	5.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768DC2

Deuteranopia (green-blind)

#6581BF

Tritanopia (blue-blind)

#009A9F

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428dc0;
/* rgb */ color: rgb(66, 141, 192);
/* oklch */ color: oklch(61.8% 0.107 241.2);

Tailwind

colors: {
  custom: {
    50: '#83aed3',
    500: '#428dc0',
    950: '#000000',
  },
}

SCSS

$custom: #428dc0;
$custom-light: #83aed3;
$custom-dark: #000000;

JSON

{
  "hex": "#428dc0",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 192
  },
  "hsl": {
    "h": 204.286,
    "s": 50,
    "l": 50.588
  },
  "oklch": {
    "l": 0.61806,
    "c": 0.10721,
    "h": 241.2
  },
  "luminance": 0.24014
}

Semantic roles & 50–950 ramp

primary

#428DC0

secondary

#CBAA93

accent

#874EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428DC0

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

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