#428FC0#428FC0

#428FC0 is a light, moderate cyan. Relative luminance 0.246; OKLCH L 62.3% C 0.106 H 239.5°. Best body text is #000000 at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#428FC0
RGB	rgb(66, 143, 192)
HSL	hsl(203, 50%, 51%)
HSV	hsv(203, 66%, 75%)
CMYK	cmyk(65.6%, 25.5%, 0%, 24.7%)
CIE-LAB	lab(56.69, -8.29, -32.46)
CIE-LCH	lch(56.69, 33.51, 255.67°)
OKLab	oklab(62.27% -0.0537 -0.0913)
OKLCH	oklch(62.27% 0.106 239.5)
XYZ	xyz(21.5800, 24.6067, 53.4712)
Luminance	0.2461 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FC0 #C07342

analogous

#42C0B2 #428FC0 #4250C0

triadic

#428FC0 #C0428F #8FC042

tetradic

#428FC0 #B242C0 #C07342 #50C042

square

#428FC0 #B242C0 #C07342 #50C042

split-complementary

#428FC0 #C04250 #C0B242

monochromatic

#224B66 #316D94 #428FC0 #70AACF #9EC5DF

Accessibility & contrast

On white

3.55

#428FC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.92

#428FC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FC0

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FC0	#FFFFFF	#000000	##000000
##428FC0	1.00	3.55	5.92	5.92
#FFFFFF	3.55	1.00	21.00	21.00
#000000	5.92	21.00	1.00	1.00
##000000	5.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788FC2

Deuteranopia (green-blind)

#6782BF

Tritanopia (blue-blind)

#009BA0

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428fc0;
/* rgb */ color: rgb(66, 143, 192);
/* oklch */ color: oklch(62.3% 0.106 239.5);

Tailwind

colors: {
  custom: {
    50: '#83afd3',
    500: '#428fc0',
    950: '#000000',
  },
}

SCSS

$custom: #428fc0;
$custom-light: #83afd3;
$custom-dark: #000000;

JSON

{
  "hex": "#428fc0",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 192
  },
  "hsl": {
    "h": 203.333,
    "s": 50,
    "l": 50.588
  },
  "oklch": {
    "l": 0.62274,
    "c": 0.10591,
    "h": 239.5
  },
  "luminance": 0.24609
}

Semantic roles & 50–950 ramp

primary

#428FC0

secondary

#CBA993

accent

#844EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428FC0

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

Preview Lab → · Contrast checker → · Palette generator →