ColorTool
Log in
#3B66EA

#3b66ea ≈ Royal Blue

  • blue
  • Lightness: medium
  • Saturation: strong
  • Cool
Check contrast Explore in graph Random color

#3b66ea is a color from the blue family, with medium lightness and strong saturation. In the RGB model it is made of 23.14% red, 40% green and 91.76% blue; printed in CMYK it uses 74.79% cyan, 56.41% magenta, 0% yellow and 8.24% black. Its hue angle is 225.26°, with 80.65% saturation and 57.45% 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. White text on this color reaches a contrast ratio of 4.91:1 (WCAG AA). The closest named color is Royal Blue (#4169e1), ΔE 1.39.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#3366ff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1637

Complementary

  1. #3b66ea
  2. #eabf3b

Split complementary

  1. #3b66ea
  2. #ea683b
  3. #bdea3b

Analogous

  1. #3bbdea
  2. #3b66ea
  3. #683bea

Triadic

  1. #3b66ea
  2. #ea3b66
  3. #66ea3b

Tetradic

  1. #3b66ea
  2. #bf3bea
  3. #eabf3b
  4. #66ea3b

Square

  1. #3b66ea
  2. #ea3bbd
  3. #eabf3b
  4. #3bea68

Monochromatic

  1. #0e297e
  2. #1540c4
  3. #3b66ea
  4. #809cf1
  5. #c5d2f9

Shades

#3b66ea mixed progressively with black.

  1. #3b66ea
  2. #355cd3
  3. #2f52bb
  4. #2947a4
  5. #233d8c
  6. #1e3375
  7. #18295e
  8. #121f46
  9. #0c142f
  10. #060a17
  11. #000000

Tints

#3b66ea mixed progressively with white.

  1. #3b66ea
  2. #4f75ec
  3. #6285ee
  4. #7694f0
  5. #89a3f2
  6. #9db3f5
  7. #b1c2f7
  8. #c4d1f9
  9. #d8e0fb
  10. #ebf0fd
  11. #ffffff

Tones

#3b66ea mixed progressively with gray.

  1. #3b66ea
  2. #4269df
  3. #496bd5
  4. #506eca
  5. #5770c0
  6. #5e73b5
  7. #6476aa
  8. #6b78a0
  9. #727b95
  10. #797d8b
  11. #808080

Readable text 4.91:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.27:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕

Achromatopsia #717171 ≈ 0.003% of males
Achromatomaly #606caf ≈ 0.001% of males
Protanopia #0079ee ≈ 1.01% of males
Deuteranopia #0069e7 ≈ 1.27% of males
Tritanopia #00879e ≈ 0.0001% of males
Protanomaly #0e72ed ≈ 1.08% of males
Deuteranomaly #0068e8 ≈ 4.63% of males
Tritanomaly #007bc1 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-3b66ea {
  color: #3b66ea;
}
Background
.bg-3b66ea {
  background-color: #3b66ea;
  color: #ffffff;
}
Border
.border-3b66ea {
  border: 2px solid #3b66ea;
}
CSS variables
:root {
  --color-primary: #3b66ea;
  --color-primary-rgb: 59 102 234;
  --color-primary-hsl: 225 81% 57%;
}
Gradient
.gradient-3b66ea {
  background: linear-gradient(135deg, #3b66ea, #683bea);
}
Colored shadow
.shadow-3b66ea {
  box-shadow: 0 8px 24px rgb(59 102 234 / 0.35);
}

#4169e1 Royal Blue ΔE 1.39 #4166f5 Ultramarine Blue ΔE 1.77 #0070ff Brandeis Blue ΔE 4.86 #1560bd Denim ΔE 7.82 #6a5acd Slate Blue ΔE 8.89 #0073cf True Blue ΔE 8.94 #6050dc Majorelle Blue ΔE 9.03 #c49915 Inverted #717171 Grayscale 

Royal Blue
#3b66ea  rgb(59, 102, 234)  hsl(225, 81%, 57%)  Royal Blue
#eabf3b  rgb(234, 191, 59)  hsl(45, 81%, 57%)  Saffron
#ea3b66  rgb(234, 59, 102)  hsl(345, 81%, 57%)  Cerise
#66ea3b  rgb(102, 234, 59)  hsl(105, 81%, 57%)  Neon Green