#428DC3#428DC3

#428DC3 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 62.0% C 0.111 H 242.7°. Best body text is #000000 at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#428DC3
RGB	rgb(66, 141, 195)
HSL	hsl(205, 52%, 51%)
HSV	hsv(205, 66%, 76%)
CMYK	cmyk(66.2%, 27.7%, 0%, 23.5%)
CIE-LAB	lab(56.23, -6.14, -34.88)
CIE-LCH	lch(56.23, 35.41, 260.01°)
OKLab	oklab(61.96% -0.0506 -0.0983)
OKLCH	oklch(61.96% 0.111 242.7)
XYZ	xyz(21.6182, 24.1459, 55.1405)
Luminance	0.2415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DC3 #C37842

analogous

#42C3B8 #428DC3 #424CC3

triadic

#428DC3 #C3428D #8DC342

tetradic

#428DC3 #B842C3 #C37842 #4CC342

square

#428DC3 #B842C3 #C37842 #4CC342

split-complementary

#428DC3 #C3424C #C3B842

monochromatic

#214B69 #306C98 #428DC3 #70A9D2 #9FC5E0

Accessibility & contrast

On white

3.60

#428DC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.83

#428DC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DC3

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DC3	#FFFFFF	#000000	##000000
##428DC3	1.00	3.60	5.83	5.83
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.83	21.00	1.00	1.00
##000000	5.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758EC5

Deuteranopia (green-blind)

#6381C2

Tritanopia (blue-blind)

#009AA0

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428dc3;
/* rgb */ color: rgb(66, 141, 195);
/* oklch */ color: oklch(62.0% 0.111 242.7);

Tailwind

colors: {
  custom: {
    50: '#84aed5',
    500: '#428dc3',
    950: '#000000',
  },
}

SCSS

$custom: #428dc3;
$custom-light: #84aed5;
$custom-dark: #000000;

JSON

{
  "hex": "#428dc3",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 195
  },
  "hsl": {
    "h": 205.116,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.61957,
    "c": 0.11057,
    "h": 242.7
  },
  "luminance": 0.24148
}

Semantic roles & 50–950 ramp

primary

#428DC3

secondary

#CDAC94

accent

#884DDB

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428DC3

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

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