ColorTool
Log in
#255AFF

#255aff ≈ Ultramarine Blue

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

#255aff is a color from the blue family, with medium lightness and vivid saturation. In the RGB model it is made of 14.51% red, 35.29% green and 100% blue; printed in CMYK it uses 85.49% cyan, 64.71% magenta, 0% yellow and 0% black. Its hue angle is 225.41°, 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 5.27:1 (WCAG AA). The closest named color is Ultramarine Blue (#4166f5), ΔE 3.8.

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 luminance0.1493

Complementary

  1. #255aff
  2. #ffca25

Split complementary

  1. #255aff
  2. #ff5d25
  3. #c7ff25

Analogous

  1. #25c7ff
  2. #255aff
  3. #5d25ff

Triadic

  1. #255aff
  2. #ff255a
  3. #5aff25

Tetradic

  1. #255aff
  2. #ca25ff
  3. #ffca25
  4. #5aff25

Square

  1. #255aff
  2. #ff25c7
  3. #ffca25
  4. #25ff5d

Monochromatic

  1. #00228b
  2. #0034d7
  3. #255aff
  4. #7194ff
  5. #beceff

Shades

#255aff mixed progressively with black.

  1. #255aff
  2. #2151e6
  3. #1e48cc
  4. #1a3fb3
  5. #163699
  6. #132d80
  7. #0f2466
  8. #0b1b4d
  9. #071233
  10. #04091a
  11. #000000

Tints

#255aff mixed progressively with white.

  1. #255aff
  2. #3b6bff
  3. #517bff
  4. #668cff
  5. #7c9cff
  6. #92adff
  7. #a8bdff
  8. #beceff
  9. #d3deff
  10. #e9efff
  11. #ffffff

Tones

#255aff mixed progressively with gray.

  1. #255aff
  2. #2e5ef2
  3. #3762e6
  4. #4065d9
  5. #4969cc
  6. #536dc0
  7. #5c71b3
  8. #6575a6
  9. #6e7899
  10. #777c8d
  11. #808080

Readable text 5.27:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 3.99:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕

Achromatopsia #6c6c6c ≈ 0.003% of males
Achromatomaly #5865ba ≈ 0.001% of males
Protanopia #0076ff ≈ 1.01% of males
Deuteranopia #0062fc ≈ 1.27% of males
Tritanopia #0087a5 ≈ 0.0001% of males
Protanomaly #006cff ≈ 1.08% of males
Deuteranomaly #005ffd ≈ 4.63% of males
Tritanomaly #0077cf ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-255aff {
  color: #255aff;
}
Background
.bg-255aff {
  background-color: #255aff;
  color: #ffffff;
}
Border
.border-255aff {
  border: 2px solid #255aff;
}
CSS variables
:root {
  --color-primary: #255aff;
  --color-primary-rgb: 37 90 255;
  --color-primary-hsl: 225 100% 57%;
}
Gradient
.gradient-255aff {
  background: linear-gradient(135deg, #255aff, #5d25ff);
}
Colored shadow
.shadow-255aff {
  box-shadow: 0 8px 24px rgb(37 90 255 / 0.35);
}

#4166f5 Ultramarine Blue ΔE 3.80 #4169e1 Royal Blue ΔE 5.54 #6050dc Majorelle Blue ΔE 7.20 #0070ff Brandeis Blue ΔE 7.67 #5a4fcf Iris ΔE 7.96 #6a5acd Slate Blue ΔE 8.78 #1560bd Denim ΔE 9.68 #daa500 Inverted #6c6c6c Grayscale 

Ultramarine Blue
#255aff  rgb(37, 90, 255)  hsl(225, 100%, 57%)  Ultramarine Blue
#ffca25  rgb(255, 202, 37)  hsl(45, 100%, 57%)  Sunglow
#ff255a  rgb(255, 37, 90)  hsl(345, 100%, 57%)  Folly
#5aff25  rgb(90, 255, 37)  hsl(105, 100%, 57%)  Harlequin