#28B1D4#28B1D4

#28B1D4 is a light, vivid cyan. Relative luminance 0.366; OKLCH L 70.6% C 0.120 H 220.2°. Best body text is #000000 at 8.33:1 contrast (WCAG AA passes).

Color values

HEX#28B1D4
RGBrgb(40, 177, 212)
HSLhsl(192, 68%, 49%)
HSVhsv(192, 81%, 83%)
CMYKcmyk(81.1%, 16.5%, 0%, 16.9%)
CIE-LABlab(67.01, -23.24, -27.70)
CIE-LCHlch(67.01, 36.16, 230.01°)
OKLaboklab(70.61% -0.0919 -0.0776)
OKLCHoklch(70.61% 0.12 220.2)
XYZxyz(28.4758, 36.6453, 67.8470)
Luminance0.3665 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#28B1D4 #D44B28
analogous
#28D4A1 #28B1D4 #285BD4
triadic
#28B1D4 #D428B1 #B1D428
tetradic
#28B1D4 #A128D4 #D44B28 #5BD428
square
#28B1D4 #A128D4 #D44B28 #5BD428
split-complementary
#28B1D4 #D4285B #D4A128
monochromatic
#155B6D #1E86A1 #28B1D4 #59C4E0 #8DD7E9

Accessibility & contrast

On white

2.52
#28B1D4 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.33
#28B1D4 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #28B1D4
8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##28B1D4#FFFFFF#000000##000000
##28B1D41.002.528.338.33
#FFFFFF2.521.0021.0021.00
#0000008.3321.001.001.00
##0000008.3321.001.001.00

Color blindness preview

Protanopia (red-blind)
#9CACD6
Deuteranopia (green-blind)
#859CD4
Tritanopia (blue-blind)
#00BCBC
Achromatopsia (no color)
#A3A3A3

Design tokens & code

CSS
--color: #28b1d4;
/* rgb */ color: rgb(40, 177, 212);
/* oklch */ color: oklch(70.6% 0.120 220.2);
Tailwind
colors: {
  custom: {
    50: '#80c8e1',
    500: '#28b1d4',
    950: '#000000',
  },
}
SCSS
$custom: #28b1d4;
$custom-light: #80c8e1;
$custom-dark: #000000;
JSON
{
  "hex": "#28b1d4",
  "rgb": {
    "r": 40,
    "g": 177,
    "b": 212
  },
  "hsl": {
    "h": 192.209,
    "s": 68.254,
    "l": 49.412
  },
  "oklch": {
    "l": 0.70614,
    "c": 0.12026,
    "h": 220.2
  },
  "luminance": 0.36649
}

Semantic roles & 50–950 ramp

primary
#28B1D4
secondary
#D49484
accent
#603DEB
background
#F8FCFD
surface
#F0F8FB
border
#CBD1D4
text
#0C1315
muted
#7D8283

Preview Lab

Preview with #28B1D4

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

Preview Lab → · Contrast checker → · Palette generator →

#28B1D4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva