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#281DFD

#281dfd ≈ Ultramarine

  • blue
  • Lightness: medium
  • Saturation: vivid
  • Cool
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#281dfd is a color from the blue family, with medium lightness and vivid saturation. In the RGB model it is made of 15.69% red, 11.37% green and 99.22% blue; printed in CMYK it uses 84.19% cyan, 88.54% magenta, 0% yellow and 0.78% black. Its hue angle is 242.95°, with 98.25% saturation and 55.29% 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 7.82:1 (WCAG AAA). The closest named color is Ultramarine (#3f00ff), ΔE 2.01.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#3333ff
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.0842

Complementary

  1. #281dfd
  2. #f2fd1d

Split complementary

  1. #281dfd
  2. #fd981d
  3. #82fd1d

Analogous

  1. #1d82fd
  2. #281dfd
  3. #981dfd

Triadic

  1. #281dfd
  2. #fd281d
  3. #1dfd28

Tetradic

  1. #281dfd
  2. #fd1df2
  3. #f2fd1d
  4. #1dfd28

Square

  1. #281dfd
  2. #fd1d82
  3. #f2fd1d
  4. #1dfd98

Monochromatic

  1. #070180
  2. #0c02cc
  3. #281dfd
  4. #7069fe
  5. #b8b5fe

Shades

#281dfd mixed progressively with black.

  1. #281dfd
  2. #241ae4
  3. #2017ca
  4. #1c14b1
  5. #181198
  6. #140f7f
  7. #100c65
  8. #0c094c
  9. #080633
  10. #040319
  11. #000000

Tints

#281dfd mixed progressively with white.

  1. #281dfd
  2. #3e34fd
  3. #534afd
  4. #6961fe
  5. #7e77fe
  6. #948efe
  7. #a9a5fe
  8. #bfbbfe
  9. #d4d2ff
  10. #eae8ff
  11. #ffffff

Tones

#281dfd mixed progressively with gray.

  1. #281dfd
  2. #3127f1
  3. #3a31e4
  4. #423bd8
  5. #4b45cb
  6. #544fbf
  7. #5d58b2
  8. #6662a6
  9. #6e6c99
  10. #77768d
  11. #808080

Readable text 7.82:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓
Readable text 2.68:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕

Achromatopsia #525252 ≈ 0.003% of males
Achromatomaly #4543b2 ≈ 0.001% of males
Protanopia #005dff ≈ 1.01% of males
Deuteranopia #0046fa ≈ 1.27% of males
Tritanopia #006e96 ≈ 0.0001% of males
Protanomaly #004bff ≈ 1.08% of males
Deuteranomaly #0039fb ≈ 4.63% of males
Tritanomaly #0058c8 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-281dfd {
  color: #281dfd;
}
Background
.bg-281dfd {
  background-color: #281dfd;
  color: #ffffff;
}
Border
.border-281dfd {
  border: 2px solid #281dfd;
}
CSS variables
:root {
  --color-primary: #281dfd;
  --color-primary-rgb: 40 29 253;
  --color-primary-hsl: 243 98% 55%;
}
Gradient
.gradient-281dfd {
  background: linear-gradient(135deg, #281dfd, #981dfd);
}
Colored shadow
.shadow-281dfd {
  box-shadow: 0 8px 24px rgb(40 29 253 / 0.35);
}

#3f00ff Ultramarine ΔE 2.01 #0000ff Blue ΔE 2.38 #5218fa Han Purple ΔE 2.73 #6f00ff Electric Indigo ΔE 5.79 #0000cd Medium Blue ΔE 7.94 #1c39bb Persian Blue ΔE 9.05 #4f42b5 Ocean Blue ΔE 9.93 #d7e202 Inverted #525252 Grayscale 

Ultramarine
#281dfd  rgb(40, 29, 253)  hsl(243, 98%, 55%)  Ultramarine
#f2fd1d  rgb(242, 253, 29)  hsl(63, 98%, 55%)  Daffodil
#fd281d  rgb(253, 40, 29)  hsl(3, 98%, 55%)  Candy Apple Red
#1dfd28  rgb(29, 253, 40)  hsl(123, 98%, 55%)  Lime