ColorTool
Log in
#51CDFF

#51cdff ≈ Deep Sky Blue

  • azure
  • Lightness: high
  • Saturation: strong
  • Cool
Check contrast Explore in graph Random color

#51cdff is a color from the azure family, with high lightness and strong saturation. In the RGB model it is made of 31.76% red, 80.39% green and 100% blue; printed in CMYK it uses 68.24% cyan, 19.61% magenta, 0% yellow and 0% black. Its hue angle is 197.24°, with 100% saturation and 65.88% lightness in HSL. It is a cool color, often associated with openness, freedom and calm. Designers typically use it for technology products, finance and banking and call-to-action buttons. Black text on this color reaches a contrast ratio of 11.53:1 (WCAG AAA). The closest named color is Deep Sky Blue (#00bfff), ΔE 4.74.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#66ccff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.5263

Complementary

  1. #51cdff
  2. #ff8351

Split complementary

  1. #51cdff
  2. #ff5176
  3. #ffda51

Analogous

  1. #51ffda
  2. #51cdff
  3. #5176ff

Triadic

  1. #51cdff
  2. #ff51cd
  3. #cdff51

Tetradic

  1. #51cdff
  2. #8351ff
  3. #ff8351
  4. #cdff51

Square

  1. #51cdff
  2. #da51ff
  3. #ff8351
  4. #76ff51

Monochromatic

  1. #0082b7
  2. #04b7ff
  3. #51cdff
  4. #9de3ff
  5. #eaf9ff

Shades

#51cdff mixed progressively with black.

  1. #51cdff
  2. #49b9e6
  3. #41a4cc
  4. #3990b3
  5. #317b99
  6. #296780
  7. #205266
  8. #183e4d
  9. #102933
  10. #08151a
  11. #000000

Tints

#51cdff mixed progressively with white.

  1. #51cdff
  2. #62d2ff
  3. #74d7ff
  4. #85dcff
  5. #97e1ff
  6. #a8e6ff
  7. #b9ebff
  8. #cbf0ff
  9. #dcf5ff
  10. #eefaff
  11. #ffffff

Tones

#51cdff mixed progressively with gray.

  1. #51cdff
  2. #56c5f2
  3. #5abee6
  4. #5fb6d9
  5. #64aecc
  6. #69a7c0
  7. #6d9fb3
  8. #7297a6
  9. #778f99
  10. #7b888d
  11. #808080

Readable text 1.82:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕
Readable text 11.53:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓

Achromatopsia #c0c0c0 ≈ 0.003% of males
Achromatomaly #9fc5dc ≈ 0.001% of males
Protanopia #b3caff ≈ 1.01% of males
Deuteranopia #9bb8fe ≈ 1.27% of males
Tritanopia #00dbdd ≈ 0.0001% of males
Protanomaly #96cbff ≈ 1.08% of males
Deuteranomaly #84c1ff ≈ 4.63% of males
Tritanomaly #00d6ec ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-51cdff {
  color: #51cdff;
}
Background
.bg-51cdff {
  background-color: #51cdff;
  color: #000000;
}
Border
.border-51cdff {
  border: 2px solid #51cdff;
}
CSS variables
:root {
  --color-primary: #51cdff;
  --color-primary-rgb: 81 205 255;
  --color-primary-hsl: 197 100% 66%;
}
Gradient
.gradient-51cdff {
  background: linear-gradient(135deg, #51cdff, #5176ff);
}
Colored shadow
.shadow-51cdff {
  box-shadow: 0 8px 24px rgb(81 205 255 / 0.35);
}

#00bfff Deep Sky Blue ΔE 4.74 #87cefa Light Sky Blue ΔE 5.17 #89cff0 Baby Blue ΔE 5.25 #87ceeb Sky Blue ΔE 5.69 #73c2fb Maya Blue ΔE 6.31 #a4dded Non-Photo Blue ΔE 10.76 #73a9c2 Moonstone Blue ΔE 11.30 #ae3200 Inverted #c0c0c0 Grayscale 

Deep Sky Blue
#51cdff  rgb(81, 205, 255)  hsl(197, 100%, 66%)  Deep Sky Blue
#ff8351  rgb(255, 131, 81)  hsl(17, 100%, 66%)  Coral
#ff51cd  rgb(255, 81, 205)  hsl(317, 100%, 66%)  Rose Pink
#cdff51  rgb(205, 255, 81)  hsl(77, 100%, 66%)  Electric Lime