ColorTool
Log in
#3770DA

#3770da ≈ Royal Blue

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

#3770da is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 21.57% red, 43.92% green and 85.49% blue; printed in CMYK it uses 74.77% cyan, 48.62% magenta, 0% yellow and 14.51% black. Its hue angle is 219.02°, with 68.78% saturation and 53.53% 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 brand accents. White text on this color reaches a contrast ratio of 4.67:1 (WCAG AA). The closest named color is Royal Blue (#4169e1), ΔE 3.46.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#3366cc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1746

Complementary

  1. #3770da
  2. #daa137

Split complementary

  1. #3770da
  2. #da5037
  3. #c1da37

Analogous

  1. #37c1da
  2. #3770da
  3. #5037da

Triadic

  1. #3770da
  2. #da3770
  3. #70da37

Tetradic

  1. #3770da
  2. #a137da
  3. #daa137
  4. #70da37

Square

  1. #3770da
  2. #da37c1
  3. #daa137
  4. #37da50

Monochromatic

  1. #133065
  2. #1f4ea6
  3. #3770da
  4. #789ee6
  5. #b8ccf2

Shades

#3770da mixed progressively with black.

  1. #3770da
  2. #3265c4
  3. #2c5aae
  4. #274e99
  5. #214383
  6. #1c386d
  7. #162d57
  8. #112241
  9. #0b162c
  10. #060b16
  11. #000000

Tints

#3770da mixed progressively with white.

  1. #3770da
  2. #4b7ede
  3. #5f8de1
  4. #739be5
  5. #87a9e9
  6. #9bb8ed
  7. #afc6f0
  8. #c3d4f4
  9. #d7e2f8
  10. #ebf1fb
  11. #ffffff

Tones

#3770da mixed progressively with gray.

  1. #3770da
  2. #3e72d1
  3. #4673c8
  4. #4d75bf
  5. #5476b6
  6. #5c78ad
  7. #637aa4
  8. #6a7b9b
  9. #717d92
  10. #797e89
  11. #808080

Readable text 4.67:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.49:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕

Achromatopsia #747474 ≈ 0.003% of males
Achromatomaly #6172a7 ≈ 0.001% of males
Protanopia #337cde ≈ 1.01% of males
Deuteranopia #006dd8 ≈ 1.27% of males
Tritanopia #00899a ≈ 0.0001% of males
Protanomaly #3477dc ≈ 1.08% of males
Deuteranomaly #1c6ed9 ≈ 4.63% of males
Tritanomaly #0080b7 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-3770da {
  color: #3770da;
}
Background
.bg-3770da {
  background-color: #3770da;
  color: #ffffff;
}
Border
.border-3770da {
  border: 2px solid #3770da;
}
CSS variables
:root {
  --color-primary: #3770da;
  --color-primary-rgb: 55 112 218;
  --color-primary-hsl: 219 69% 54%;
}
Gradient
.gradient-3770da {
  background: linear-gradient(135deg, #3770da, #5037da);
}
Colored shadow
.shadow-3770da {
  box-shadow: 0 8px 24px rgb(55 112 218 / 0.35);
}

#4169e1 Royal Blue ΔE 3.46 #0070ff Brandeis Blue ΔE 3.81 #0073cf True Blue ΔE 4.95 #417dc1 Tufts Blue ΔE 5.52 #4166f5 Ultramarine Blue ΔE 5.71 #1560bd Denim ΔE 7.05 #0072bb French Blue ΔE 7.31 #c88f25 Inverted #747474 Grayscale 

Royal Blue
#3770da  rgb(55, 112, 218)  hsl(219, 69%, 54%)  Royal Blue
#daa137  rgb(218, 161, 55)  hsl(39, 69%, 54%)  Goldenrod
#da3770  rgb(218, 55, 112)  hsl(339, 69%, 54%)  Razzmatazz
#70da37  rgb(112, 218, 55)  hsl(99, 69%, 54%)  Lime Green