ColorTool
Log in
#371CFE

#371cfe ≈ Ultramarine

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

#371cfe is a color from the blue family, with medium lightness and vivid saturation. In the RGB model it is made of 21.57% red, 10.98% green and 99.61% blue; printed in CMYK it uses 78.35% cyan, 88.98% magenta, 0% yellow and 0.39% black. Its hue angle is 247.17°, with 99.12% 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 7.61:1 (WCAG AAA). The closest named color is Ultramarine (#3f00ff), ΔE 1.7.

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 luminance0.088

Complementary

  1. #371cfe
  2. #e3fe1c

Split complementary

  1. #371cfe
  2. #fea81c
  3. #72fe1c

Analogous

  1. #1c72fe
  2. #371cfe
  3. #a81cfe

Triadic

  1. #371cfe
  2. #fe371c
  3. #1cfe37

Tetradic

  1. #371cfe
  2. #fe1ce3
  3. #e3fe1c
  4. #1cfe37

Square

  1. #371cfe
  2. #fe1c72
  3. #e3fe1c
  4. #1cfea8

Monochromatic

  1. #100180
  2. #1901cd
  3. #371cfe
  4. #7a68fe
  5. #bdb4ff

Shades

#371cfe mixed progressively with black.

  1. #371cfe
  2. #3219e5
  3. #2c16cb
  4. #2714b2
  5. #211198
  6. #1c0e7f
  7. #160b66
  8. #11084c
  9. #0b0633
  10. #060319
  11. #000000

Tints

#371cfe mixed progressively with white.

  1. #371cfe
  2. #4b33fe
  3. #5f49fe
  4. #7360fe
  5. #8777fe
  6. #9b8eff
  7. #afa4ff
  8. #c3bbff
  9. #d7d2ff
  10. #ebe8ff
  11. #ffffff

Tones

#371cfe mixed progressively with gray.

  1. #371cfe
  2. #3e26f1
  3. #4630e5
  4. #4d3ad8
  5. #5444cc
  6. #5c4ebf
  7. #6358b2
  8. #6a62a6
  9. #716c99
  10. #79768d
  11. #808080

Readable text 7.61:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓
Readable text 2.76:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕

Achromatopsia #545454 ≈ 0.003% of males
Achromatomaly #4a44b3 ≈ 0.001% of males
Protanopia #005eff ≈ 1.01% of males
Deuteranopia #0048fa ≈ 1.27% of males
Tritanopia #006d97 ≈ 0.0001% of males
Protanomaly #004cff ≈ 1.08% of males
Deuteranomaly #003bfc ≈ 4.63% of males
Tritanomaly #0058c9 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-371cfe {
  color: #371cfe;
}
Background
.bg-371cfe {
  background-color: #371cfe;
  color: #ffffff;
}
Border
.border-371cfe {
  border: 2px solid #371cfe;
}
CSS variables
:root {
  --color-primary: #371cfe;
  --color-primary-rgb: 55 28 254;
  --color-primary-hsl: 247 99% 55%;
}
Gradient
.gradient-371cfe {
  background: linear-gradient(135deg, #371cfe, #a81cfe);
}
Colored shadow
.shadow-371cfe {
  box-shadow: 0 8px 24px rgb(55 28 254 / 0.35);
}

#3f00ff Ultramarine ΔE 1.70 #5218fa Han Purple ΔE 1.92 #0000ff Blue ΔE 2.89 #6f00ff Electric Indigo ΔE 4.96 #0000cd Medium Blue ΔE 8.48 #8f00ff Electric Violet ΔE 9.23 #1c39bb Persian Blue ΔE 9.54 #c8e301 Inverted #545454 Grayscale 

Ultramarine
#371cfe  rgb(55, 28, 254)  hsl(247, 99%, 55%)  Ultramarine
#e3fe1c  rgb(227, 254, 28)  hsl(67, 99%, 55%)  Lemon Lime
#fe371c  rgb(254, 55, 28)  hsl(7, 99%, 55%)  Ferrari Red
#1cfe37  rgb(28, 254, 55)  hsl(127, 99%, 55%)  Lime