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#51C5DA

#51c5da ≈ Sky Blue

  • cyan
  • Lightness: medium
  • Saturation: strong
  • Cool
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#51c5da is a color from the cyan family, with medium lightness and strong saturation. In the RGB model it is made of 31.76% red, 77.25% green and 85.49% blue; printed in CMYK it uses 62.84% cyan, 9.63% magenta, 0% yellow and 14.51% black. Its hue angle is 189.2°, with 64.93% saturation and 58.63% 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 brand accents. Black text on this color reaches a contrast ratio of 10.35:1 (WCAG AAA). The closest named color is Sky Blue (#87ceeb), ΔE 7.46.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#66cccc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.4674

Complementary

  1. #51c5da
  2. #da6651

Split complementary

  1. #51c5da
  2. #da5181
  3. #daab51

Analogous

  1. #51daab
  2. #51c5da
  3. #5181da

Triadic

  1. #51c5da
  2. #da51c5
  3. #c5da51

Tetradic

  1. #51c5da
  2. #6651da
  3. #da6651
  4. #c5da51

Square

  1. #51c5da
  2. #ab51da
  3. #da6651
  4. #81da51

Monochromatic

  1. #1a6a78
  2. #27a1b7
  3. #51c5da
  4. #90dae7
  5. #cfeff5

Shades

#51c5da mixed progressively with black.

  1. #51c5da
  2. #49b1c4
  3. #419eae
  4. #398a99
  5. #317683
  6. #29636d
  7. #204f57
  8. #183b41
  9. #10272c
  10. #081416
  11. #000000

Tints

#51c5da mixed progressively with white.

  1. #51c5da
  2. #62cbde
  3. #74d1e1
  4. #85d6e5
  5. #97dce9
  6. #a8e2ed
  7. #b9e8f0
  8. #cbeef4
  9. #dcf3f8
  10. #eef9fb
  11. #ffffff

Tones

#51c5da mixed progressively with gray.

  1. #51c5da
  2. #56bed1
  3. #5ab7c8
  4. #5fb0bf
  5. #64a9b6
  6. #69a3ad
  7. #6d9ca4
  8. #72959b
  9. #778e92
  10. #7b8789
  11. #808080

Readable text 2.03:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕
Readable text 10.35:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓

Achromatopsia #b6b6b6 ≈ 0.003% of males
Achromatomaly #98bcc5 ≈ 0.001% of males
Protanopia #b4bfdb ≈ 1.01% of males
Deuteranopia #a0b0da ≈ 1.27% of males
Tritanopia #00cecb ≈ 0.0001% of males
Protanomaly #96c1db ≈ 1.08% of males
Deuteranomaly #87b9da ≈ 4.63% of males
Tritanomaly #00cad1 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-51c5da {
  color: #51c5da;
}
Background
.bg-51c5da {
  background-color: #51c5da;
  color: #000000;
}
Border
.border-51c5da {
  border: 2px solid #51c5da;
}
CSS variables
:root {
  --color-primary: #51c5da;
  --color-primary-rgb: 81 197 218;
  --color-primary-hsl: 189 65% 59%;
}
Gradient
.gradient-51c5da {
  background: linear-gradient(135deg, #51c5da, #5181da);
}
Colored shadow
.shadow-51c5da {
  box-shadow: 0 8px 24px rgb(81 197 218 / 0.35);
}

#87ceeb Sky Blue ΔE 7.46 #00ced1 Dark Turquoise ΔE 8.22 #89cff0 Baby Blue ΔE 8.61 #00cccc Robin Egg Blue ΔE 9.06 #a4dded Non-Photo Blue ΔE 10.00 #48d1cc Medium Turquoise ΔE 10.08 #73a9c2 Moonstone Blue ΔE 10.29 #ae3a25 Inverted #b6b6b6 Grayscale 

Sky Blue
#51c5da  rgb(81, 197, 218)  hsl(189, 65%, 59%)  Sky Blue
#da6651  rgb(218, 102, 81)  hsl(9, 65%, 59%)  Terra Cotta
#da51c5  rgb(218, 81, 197)  hsl(309, 65%, 59%)  Shocking Pink
#c5da51  rgb(197, 218, 81)  hsl(69, 65%, 59%)  June Bud