ColorTool
Log in
#A4100B

#a4100b ≈ Rufous

  • red
  • Lightness: low
  • Saturation: strong
  • Warm
Check contrast Explore in graph Random color

#a4100b is a color from the red family, with low lightness and strong saturation. In the RGB model it is made of 64.31% red, 6.27% green and 4.31% blue; printed in CMYK it uses 0% cyan, 90.24% magenta, 93.29% yellow and 35.69% black. Its hue angle is 1.96°, with 87.43% saturation and 34.31% lightness in HSL. It is a warm color, often associated with energy, passion and urgency. Designers typically use it for food and restaurant brands, sales and promotions and corporate identities. White text on this color reaches a contrast ratio of 7.9:1 (WCAG AAA). The closest named color is Rufous (#a81c07), ΔE 2.35.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#990000
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.0829

Complementary

  1. #a4100b
  2. #0b9fa4

Split complementary

  1. #a4100b
  2. #0ba45c
  3. #0b52a4

Analogous

  1. #a40b52
  2. #a4100b
  3. #a45c0b

Triadic

  1. #a4100b
  2. #0ba410
  3. #100ba4

Tetradic

  1. #a4100b
  2. #9fa40b
  3. #0b9fa4
  4. #100ba4

Square

  1. #a4100b
  2. #52a40b
  3. #0b9fa4
  4. #5c0ba4

Monochromatic

  1. #150201
  2. #5c0906
  3. #a4100b
  4. #ec1710
  5. #f45a54

Shades

#a4100b mixed progressively with black.

  1. #a4100b
  2. #940e0a
  3. #830d09
  4. #730b08
  5. #620a07
  6. #520806
  7. #420604
  8. #310503
  9. #210302
  10. #100201
  11. #000000

Tints

#a4100b mixed progressively with white.

  1. #a4100b
  2. #ad2823
  3. #b6403c
  4. #bf5854
  5. #c8706d
  6. #d28885
  7. #db9f9d
  8. #e4b7b6
  9. #edcfce
  10. #f6e7e7
  11. #ffffff

Tones

#a4100b mixed progressively with gray.

  1. #a4100b
  2. #a01b17
  3. #9d2622
  4. #99322e
  5. #963d3a
  6. #924846
  7. #8e5351
  8. #8b5e5d
  9. #876a69
  10. #847574
  11. #808080

Readable text 7.9:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓
Readable text 2.66:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕

Achromatopsia #515151 ≈ 0.003% of males
Achromatomaly #7b4040 ≈ 0.001% of males
Protanopia #463d06 ≈ 1.01% of males
Deuteranopia #695c00 ≈ 1.27% of males
Tritanopia #b60013 ≈ 0.0001% of males
Protanomaly #773108 ≈ 1.08% of males
Deuteranomaly #844903 ≈ 4.63% of males
Tritanomaly #af0010 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-a4100b {
  color: #a4100b;
}
Background
.bg-a4100b {
  background-color: #a4100b;
  color: #ffffff;
}
Border
.border-a4100b {
  border: 2px solid #a4100b;
}
CSS variables
:root {
  --color-primary: #a4100b;
  --color-primary-rgb: 164 16 11;
  --color-primary-hsl: 2 87% 34%;
}
Gradient
.gradient-a4100b {
  background: linear-gradient(135deg, #a4100b, #a45c0b);
}
Colored shadow
.shadow-a4100b {
  box-shadow: 0 8px 24px rgb(164 16 11 / 0.35);
}

#a81c07 Rufous ΔE 2.35 #b31b1b Cornell Red ΔE 4.00 #92000a Sangria ΔE 4.22 #b22222 Firebrick ΔE 4.95 #8b0000 Dark Red ΔE 5.27 #960018 Carmine ΔE 5.86 #a52a2a Brown ΔE 5.99 #5beff4 Inverted #515151 Grayscale 

Rufous
#a4100b  rgb(164, 16, 11)  hsl(2, 87%, 34%)  Rufous
#0b9fa4  rgb(11, 159, 164)  hsl(182, 87%, 34%)  Cadet Blue
#0ba410  rgb(11, 164, 16)  hsl(122, 87%, 34%)  Islamic Green
#100ba4  rgb(16, 11, 164)  hsl(242, 87%, 34%)  Zaffre