ColorTool
Log in
#0366EF

#0366ef ≈ Royal Blue

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

#0366ef is a color from the azure family, with medium lightness and vivid saturation. In the RGB model it is made of 1.18% red, 40% green and 93.73% blue; printed in CMYK it uses 98.74% cyan, 57.32% magenta, 0% yellow and 6.27% black. Its hue angle is 214.83°, with 97.52% saturation and 47.45% 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 5.06:1 (WCAG AA). The closest named color is Royal Blue (#4169e1), ΔE 3.02.

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 luminance0.1575

Complementary

  1. #0366ef
  2. #ef8c03

Split complementary

  1. #0366ef
  2. #ef1603
  3. #dcef03

Analogous

  1. #03dcef
  2. #0366ef
  3. #1603ef

Triadic

  1. #0366ef
  2. #ef0366
  3. #66ef03

Tetradic

  1. #0366ef
  2. #8c03ef
  3. #ef8c03
  4. #66ef03

Square

  1. #0366ef
  2. #ef03dc
  3. #ef8c03
  4. #03ef16

Monochromatic

  1. #012658
  2. #0246a3
  3. #0366ef
  4. #4290fd
  5. #8dbcfe

Shades

#0366ef mixed progressively with black.

  1. #0366ef
  2. #035cd7
  3. #0252bf
  4. #0247a7
  5. #023d8f
  6. #023378
  7. #012960
  8. #011f48
  9. #011430
  10. #000a18
  11. #000000

Tints

#0366ef mixed progressively with white.

  1. #0366ef
  2. #1c75f1
  3. #3585f2
  4. #4f94f4
  5. #68a3f5
  6. #81b3f7
  7. #9ac2f9
  8. #b3d1fa
  9. #cde0fc
  10. #e6f0fd
  11. #ffffff

Tones

#0366ef mixed progressively with gray.

  1. #0366ef
  2. #1069e4
  3. #1c6bd9
  4. #296ece
  5. #3570c3
  6. #4273b8
  7. #4e76ac
  8. #5b78a1
  9. #677b96
  10. #747d8b
  11. #808080

Readable text 5.06:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.15:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕

Achromatopsia #6f6f6f ≈ 0.003% of males
Achromatomaly #576bb1 ≈ 0.001% of males
Protanopia #0079f4 ≈ 1.01% of males
Deuteranopia #0065ec ≈ 1.27% of males
Tritanopia #0089a1 ≈ 0.0001% of males
Protanomaly #0072f2 ≈ 1.08% of males
Deuteranomaly #0065ed ≈ 4.63% of males
Tritanomaly #007dc5 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-0366ef {
  color: #0366ef;
}
Background
.bg-0366ef {
  background-color: #0366ef;
  color: #ffffff;
}
Border
.border-0366ef {
  border: 2px solid #0366ef;
}
CSS variables
:root {
  --color-primary: #0366ef;
  --color-primary-rgb: 3 102 239;
  --color-primary-hsl: 215 98% 47%;
}
Gradient
.gradient-0366ef {
  background: linear-gradient(135deg, #0366ef, #1603ef);
}
Colored shadow
.shadow-0366ef {
  box-shadow: 0 8px 24px rgb(3 102 239 / 0.35);
}

#4169e1 Royal Blue ΔE 3.02 #4166f5 Ultramarine Blue ΔE 3.96 #0070ff Brandeis Blue ΔE 3.99 #1560bd Denim ΔE 6.48 #0073cf True Blue ΔE 7.10 #436b95 Queen Blue ΔE 8.64 #417dc1 Tufts Blue ΔE 8.82 #fc9910 Inverted #6f6f6f Grayscale 

Royal Blue
#0366ef  rgb(3, 102, 239)  hsl(215, 98%, 47%)  Royal Blue
#ef8c03  rgb(239, 140, 3)  hsl(35, 98%, 47%)  Carrot Orange
#ef0366  rgb(239, 3, 102)  hsl(335, 98%, 47%)  Razzmatazz
#66ef03  rgb(102, 239, 3)  hsl(95, 98%, 47%)  Lawn Green