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#255DFF

#255dff ≈ Ultramarine Blue

  • blue
  • Lightness: medium
  • Saturation: vivid
  • Cool
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#255dff is a color from the blue family, with medium lightness and vivid saturation. In the RGB model it is made of 14.51% red, 36.47% green and 100% blue; printed in CMYK it uses 85.49% cyan, 63.53% magenta, 0% yellow and 0% black. Its hue angle is 224.59°, with 100% saturation and 57.25% 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 5.14:1 (WCAG AA). The closest named color is Ultramarine Blue (#4166f5), ΔE 3.01.

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 luminance0.1544

Complementary

  1. #255dff
  2. #ffc725

Split complementary

  1. #255dff
  2. #ff5a25
  3. #caff25

Analogous

  1. #25caff
  2. #255dff
  3. #5a25ff

Triadic

  1. #255dff
  2. #ff255d
  3. #5dff25

Tetradic

  1. #255dff
  2. #c725ff
  3. #ffc725
  4. #5dff25

Square

  1. #255dff
  2. #ff25ca
  3. #ffc725
  4. #25ff5a

Monochromatic

  1. #00248b
  2. #0037d7
  3. #255dff
  4. #7196ff
  5. #becfff

Shades

#255dff mixed progressively with black.

  1. #255dff
  2. #2154e6
  3. #1e4acc
  4. #1a41b3
  5. #163899
  6. #132f80
  7. #0f2566
  8. #0b1c4d
  9. #071333
  10. #04091a
  11. #000000

Tints

#255dff mixed progressively with white.

  1. #255dff
  2. #3b6dff
  3. #517dff
  4. #668eff
  5. #7c9eff
  6. #92aeff
  7. #a8beff
  8. #beceff
  9. #d3dfff
  10. #e9efff
  11. #ffffff

Tones

#255dff mixed progressively with gray.

  1. #255dff
  2. #2e61f2
  3. #3764e6
  4. #4068d9
  5. #496bcc
  6. #536fc0
  7. #5c72b3
  8. #6576a6
  9. #6e7999
  10. #777d8d
  11. #808080

Readable text 5.14:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.09:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕

Achromatopsia #6d6d6d ≈ 0.003% of males
Achromatomaly #5967ba ≈ 0.001% of males
Protanopia #0078ff ≈ 1.01% of males
Deuteranopia #0064fc ≈ 1.27% of males
Tritanopia #0088a6 ≈ 0.0001% of males
Protanomaly #006eff ≈ 1.08% of males
Deuteranomaly #0061fd ≈ 4.63% of males
Tritanomaly #0079d0 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-255dff {
  color: #255dff;
}
Background
.bg-255dff {
  background-color: #255dff;
  color: #ffffff;
}
Border
.border-255dff {
  border: 2px solid #255dff;
}
CSS variables
:root {
  --color-primary: #255dff;
  --color-primary-rgb: 37 93 255;
  --color-primary-hsl: 225 100% 57%;
}
Gradient
.gradient-255dff {
  background: linear-gradient(135deg, #255dff, #5a25ff);
}
Colored shadow
.shadow-255dff {
  box-shadow: 0 8px 24px rgb(37 93 255 / 0.35);
}

#4166f5 Ultramarine Blue ΔE 3.01 #4169e1 Royal Blue ΔE 4.82 #0070ff Brandeis Blue ΔE 6.75 #6050dc Majorelle Blue ΔE 7.79 #5a4fcf Iris ΔE 8.54 #6a5acd Slate Blue ΔE 9.04 #1560bd Denim ΔE 9.43 #daa200 Inverted #6d6d6d Grayscale 

Ultramarine Blue
#255dff  rgb(37, 93, 255)  hsl(225, 100%, 57%)  Ultramarine Blue
#ffc725  rgb(255, 199, 37)  hsl(45, 100%, 57%)  Mikado Yellow
#ff255d  rgb(255, 37, 93)  hsl(345, 100%, 57%)  Neon Fuchsia
#5dff25  rgb(93, 255, 37)  hsl(105, 100%, 57%)  Harlequin