ColorTool
Log in
#0166EA

#0166ea ≈ Royal Blue

  • azure
  • Lightness: medium
  • Saturation: vivid
  • Cool
Check contrast Explore in graph Random color

#0166ea is a color from the azure family, with medium lightness and vivid saturation. In the RGB model it is made of 0.39% red, 40% green and 91.76% blue; printed in CMYK it uses 99.57% cyan, 56.41% magenta, 0% yellow and 8.24% black. Its hue angle is 213.99°, with 99.15% saturation and 46.08% 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. White text on this color reaches a contrast ratio of 5.13:1 (WCAG AA). The closest named color is Royal Blue (#4169e1), ΔE 3.22.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#0066ff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1545

Complementary

  1. #0166ea
  2. #ea8501

Split complementary

  1. #0166ea
  2. #ea1001
  3. #dbea01

Analogous

  1. #01dbea
  2. #0166ea
  3. #1001ea

Triadic

  1. #0166ea
  2. #ea0166
  3. #66ea01

Tetradic

  1. #0166ea
  2. #8501ea
  3. #ea8501
  4. #66ea01

Square

  1. #0166ea
  2. #ea01db
  3. #ea8501
  4. #01ea10

Monochromatic

  1. #002452
  2. #01459e
  3. #0166ea
  4. #398ffe
  5. #86bafe

Shades

#0166ea mixed progressively with black.

  1. #0166ea
  2. #015cd3
  3. #0152bb
  4. #0147a4
  5. #013d8c
  6. #013375
  7. #00295e
  8. #001f46
  9. #00142f
  10. #000a17
  11. #000000

Tints

#0166ea mixed progressively with white.

  1. #0166ea
  2. #1a75ec
  3. #3485ee
  4. #4d94f0
  5. #67a3f2
  6. #80b3f5
  7. #99c2f7
  8. #b3d1f9
  9. #cce0fb
  10. #e6f0fd
  11. #ffffff

Tones

#0166ea mixed progressively with gray.

  1. #0166ea
  2. #0e69df
  3. #1a6bd5
  4. #276eca
  5. #3470c0
  6. #4173b5
  7. #4d76aa
  8. #5a78a0
  9. #677b95
  10. #737d8b
  11. #808080

Readable text 5.13:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.09:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕

Achromatopsia #6e6e6e ≈ 0.003% of males
Achromatomaly #566bae ≈ 0.001% of males
Protanopia #0077ef ≈ 1.01% of males
Deuteranopia #0064e7 ≈ 1.27% of males
Tritanopia #00889e ≈ 0.0001% of males
Protanomaly #0071ed ≈ 1.08% of males
Deuteranomaly #0065e8 ≈ 4.63% of males
Tritanomaly #007cc1 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-0166ea {
  color: #0166ea;
}
Background
.bg-0166ea {
  background-color: #0166ea;
  color: #ffffff;
}
Border
.border-0166ea {
  border: 2px solid #0166ea;
}
CSS variables
:root {
  --color-primary: #0166ea;
  --color-primary-rgb: 1 102 234;
  --color-primary-hsl: 214 99% 46%;
}
Gradient
.gradient-0166ea {
  background: linear-gradient(135deg, #0166ea, #1001ea);
}
Colored shadow
.shadow-0166ea {
  box-shadow: 0 8px 24px rgb(1 102 234 / 0.35);
}

#4169e1 Royal Blue ΔE 3.22 #0070ff Brandeis Blue ΔE 4.34 #4166f5 Ultramarine Blue ΔE 4.55 #1560bd Denim ΔE 5.82 #0073cf True Blue ΔE 6.65 #436b95 Queen Blue ΔE 8.19 #0072bb French Blue ΔE 8.50 #fe9915 Inverted #6e6e6e Grayscale 

Royal Blue
#0166ea  rgb(1, 102, 234)  hsl(214, 99%, 46%)  Royal Blue
#ea8501  rgb(234, 133, 1)  hsl(34, 99%, 46%)  Fulvous
#ea0166  rgb(234, 1, 102)  hsl(334, 99%, 46%)  Razzmatazz
#66ea01  rgb(102, 234, 1)  hsl(94, 99%, 46%)  Lawn Green