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#21DCFF

#21dcff ≈ Sky Blue

  • cyan
  • Lightness: medium
  • Saturation: vivid
  • Cool
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#21dcff is a color from the cyan family, with medium lightness and vivid saturation. In the RGB model it is made of 12.94% red, 86.27% green and 100% blue; printed in CMYK it uses 87.06% cyan, 13.73% magenta, 0% yellow and 0% black. Its hue angle is 189.46°, with 100% saturation and 56.47% lightness in HSL. It is a cool color, often associated with freshness, technology and clarity. Designers typically use it for health and wellness, technology products and call-to-action buttons. Black text on this color reaches a contrast ratio of 12.75:1 (WCAG AAA). The closest named color is Sky Blue (#87ceeb), ΔE 7.95.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#33ccff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.5873

Complementary

  1. #21dcff
  2. #ff4421

Split complementary

  1. #21dcff
  2. #ff216d
  3. #ffb321

Analogous

  1. #21ffb3
  2. #21dcff
  3. #216dff

Triadic

  1. #21dcff
  2. #ff21dc
  3. #dcff21

Tetradic

  1. #21dcff
  2. #4421ff
  3. #ff4421
  4. #dcff21

Square

  1. #21dcff
  2. #b321ff
  3. #ff4421
  4. #6dff21

Monochromatic

  1. #007287
  2. #00b2d3
  3. #21dcff
  4. #6de8ff
  5. #baf4ff

Shades

#21dcff mixed progressively with black.

  1. #21dcff
  2. #1ec6e6
  3. #1ab0cc
  4. #179ab3
  5. #148499
  6. #116e80
  7. #0d5866
  8. #0a424d
  9. #072c33
  10. #03161a
  11. #000000

Tints

#21dcff mixed progressively with white.

  1. #21dcff
  2. #37e0ff
  3. #4de3ff
  4. #64e7ff
  5. #7aeaff
  6. #90eeff
  7. #a6f1ff
  8. #bcf5ff
  9. #d3f8ff
  10. #e9fcff
  11. #ffffff

Tones

#21dcff mixed progressively with gray.

  1. #21dcff
  2. #2bd3f2
  3. #34cae6
  4. #3ec0d9
  5. #47b7cc
  6. #51aec0
  7. #5aa5b3
  8. #649ca6
  9. #6d9299
  10. #77898d
  11. #808080

Readable text 1.65:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕
Readable text 12.75:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓

Achromatopsia #c9c9c9 ≈ 0.003% of males
Achromatomaly #a1d1e1 ≈ 0.001% of males
Protanopia #c4d5ff ≈ 1.01% of males
Deuteranopia #a8c1ff ≈ 1.27% of males
Tritanopia #00e9e7 ≈ 0.0001% of males
Protanomaly #9dd8ff ≈ 1.08% of males
Deuteranomaly #87ccff ≈ 4.63% of males
Tritanomaly #00e4f1 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-21dcff {
  color: #21dcff;
}
Background
.bg-21dcff {
  background-color: #21dcff;
  color: #000000;
}
Border
.border-21dcff {
  border: 2px solid #21dcff;
}
CSS variables
:root {
  --color-primary: #21dcff;
  --color-primary-rgb: 33 220 255;
  --color-primary-hsl: 189 100% 56%;
}
Gradient
.gradient-21dcff {
  background: linear-gradient(135deg, #21dcff, #216dff);
}
Colored shadow
.shadow-21dcff {
  box-shadow: 0 8px 24px rgb(33 220 255 / 0.35);
}

#87ceeb Sky Blue ΔE 7.95 #89cff0 Baby Blue ΔE 8.53 #a4dded Non-Photo Blue ΔE 9.89 #87cefa Light Sky Blue ΔE 10.38 #7df9ff Electric Blue ΔE 10.79 #00ced1 Dark Turquoise ΔE 10.92 #00bfff Deep Sky Blue ΔE 10.99 #de2300 Inverted #c9c9c9 Grayscale 

Sky Blue
#21dcff  rgb(33, 220, 255)  hsl(189, 100%, 56%)  Sky Blue
#ff4421  rgb(255, 68, 33)  hsl(9, 100%, 56%)  Coquelicot
#ff21dc  rgb(255, 33, 220)  hsl(309, 100%, 56%)  Shocking Pink
#dcff21  rgb(220, 255, 33)  hsl(69, 100%, 56%)  Chartreuse Yellow