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#5166FB

#5166fb ≈ Ultramarine Blue

  • blue
  • Lightness: high
  • Saturation: strong
  • Cool
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#5166fb is a color from the blue family, with high lightness and strong saturation. In the RGB model it is made of 31.76% red, 40% green and 98.43% blue; printed in CMYK it uses 67.73% cyan, 59.36% magenta, 0% yellow and 1.57% black. Its hue angle is 232.59°, with 95.51% saturation and 65.1% lightness in HSL. It is a cool color, often associated with trust, stability and focus. 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 4.64:1 (WCAG AA). The closest named color is Ultramarine Blue (#4166f5), ΔE 2.17.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#6666ff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1822

Complementary

  1. #5166fb
  2. #fbe651

Split complementary

  1. #5166fb
  2. #fb9151
  3. #bbfb51

Analogous

  1. #51bbfb
  2. #5166fb
  3. #9151fb

Triadic

  1. #5166fb
  2. #fb5166
  3. #66fb51

Tetradic

  1. #5166fb
  2. #e651fb
  3. #fbe651
  4. #66fb51

Square

  1. #5166fb
  2. #fb51bb
  3. #fbe651
  4. #51fb91

Monochromatic

  1. #0419af
  2. #0624f9
  3. #5166fb
  4. #9ca8fd
  5. #e7eafe

Shades

#5166fb mixed progressively with black.

  1. #5166fb
  2. #495ce2
  3. #4152c9
  4. #3947b0
  5. #313d97
  6. #29337e
  7. #202964
  8. #181f4b
  9. #101432
  10. #080a19
  11. #000000

Tints

#5166fb mixed progressively with white.

  1. #5166fb
  2. #6275fb
  3. #7485fc
  4. #8594fc
  5. #97a3fd
  6. #a8b3fd
  7. #b9c2fd
  8. #cbd1fe
  9. #dce0fe
  10. #eef0ff
  11. #ffffff

Tones

#5166fb mixed progressively with gray.

  1. #5166fb
  2. #5669ef
  3. #5a6be2
  4. #5f6ed6
  5. #6470ca
  6. #6973be
  7. #6d76b1
  8. #7278a5
  9. #777b99
  10. #7b7d8c
  11. #808080

Readable text 4.52:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.64:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #767676 ≈ 0.003% of males
Achromatomaly #6970bb ≈ 0.001% of males
Protanopia #007eff ≈ 1.01% of males
Deuteranopia #006ff8 ≈ 1.27% of males
Tritanopia #008ba7 ≈ 0.0001% of males
Protanomaly #1175fe ≈ 1.08% of males
Deuteranomaly #006bf9 ≈ 4.63% of males
Tritanomaly #007ece ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-5166fb {
  color: #5166fb;
}
Background
.bg-5166fb {
  background-color: #5166fb;
  color: #000000;
}
Border
.border-5166fb {
  border: 2px solid #5166fb;
}
CSS variables
:root {
  --color-primary: #5166fb;
  --color-primary-rgb: 81 102 251;
  --color-primary-hsl: 233 96% 65%;
}
Gradient
.gradient-5166fb {
  background: linear-gradient(135deg, #5166fb, #9151fb);
}
Colored shadow
.shadow-5166fb {
  box-shadow: 0 8px 24px rgb(81 102 251 / 0.35);
}

#4166f5 Ultramarine Blue ΔE 2.17 #4169e1 Royal Blue ΔE 4.62 #7b68ee Medium Slate Blue ΔE 6.12 #0070ff Brandeis Blue ΔE 6.47 #6a5acd Slate Blue ΔE 8.17 #6050dc Majorelle Blue ΔE 8.28 #5a4fcf Iris ΔE 9.45 #ae9904 Inverted #767676 Grayscale 

Ultramarine Blue
#5166fb  rgb(81, 102, 251)  hsl(233, 96%, 65%)  Ultramarine Blue
#fbe651  rgb(251, 230, 81)  hsl(53, 96%, 65%)  Dandelion
#fb5166  rgb(251, 81, 102)  hsl(353, 96%, 65%)  Neon Fuchsia
#66fb51  rgb(102, 251, 81)  hsl(113, 96%, 65%)  Neon Green