ColorTool
Log in
#EF003F

#ef003f ≈ Crimson

  • rose
  • Lightness: medium
  • Saturation: vivid
  • Warm
Check contrast Explore in graph Random color

#ef003f is a color from the rose family, with medium lightness and vivid saturation. In the RGB model it is made of 93.73% red, 0% green and 24.71% blue; printed in CMYK it uses 0% cyan, 100% magenta, 73.64% yellow and 6.27% black. Its hue angle is 344.18°, with 100% saturation and 46.86% lightness in HSL. It is a warm color, often associated with romance, playfulness and affection. Designers typically use it for food and restaurant brands, sales and promotions and call-to-action buttons. Black text on this color reaches a contrast ratio of 4.74:1 (WCAG AA). The closest named color is Crimson (#dc143c), ΔE 3.64.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#ff0033
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1871

Complementary

  1. #ef003f
  2. #00efb0

Split complementary

  1. #ef003f
  2. #00ef38
  3. #00b7ef

Analogous

  1. #ef00b7
  2. #ef003f
  3. #ef3800

Triadic

  1. #ef003f
  2. #3fef00
  3. #003fef

Tetradic

  1. #ef003f
  2. #efb000
  3. #00efb0
  4. #003fef

Square

  1. #ef003f
  2. #b7ef00
  3. #00efb0
  4. #3800ef

Monochromatic

  1. #560017
  2. #a2002b
  3. #ef003f
  4. #ff3c70
  5. #ff89a8

Shades

#ef003f mixed progressively with black.

  1. #ef003f
  2. #d70039
  3. #bf0032
  4. #a7002c
  5. #8f0026
  6. #780020
  7. #600019
  8. #480013
  9. #30000d
  10. #180006
  11. #000000

Tints

#ef003f mixed progressively with white.

  1. #ef003f
  2. #f11a52
  3. #f23365
  4. #f44d79
  5. #f5668c
  6. #f7809f
  7. #f999b2
  8. #fab3c5
  9. #fcccd9
  10. #fde6ec
  11. #ffffff

Tones

#ef003f mixed progressively with gray.

  1. #ef003f
  2. #e40d46
  3. #d91a4c
  4. #ce2653
  5. #c33359
  6. #b84060
  7. #ac4d66
  8. #a15a6d
  9. #966673
  10. #8b737a
  11. #808080

Readable text 4.43:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.74:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #787878 ≈ 0.003% of males
Achromatomaly #b45e66 ≈ 0.001% of males
Protanopia #625b3f ≈ 1.01% of males
Deuteranopia #968737 ≈ 1.27% of males
Tritanopia #ff0026 ≈ 0.0001% of males
Protanomaly #ad473f ≈ 1.08% of males
Deuteranomaly #c06b3a ≈ 4.63% of males
Tritanomaly #fe0032 ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-ef003f {
  color: #ef003f;
}
Background
.bg-ef003f {
  background-color: #ef003f;
  color: #000000;
}
Border
.border-ef003f {
  border: 2px solid #ef003f;
}
CSS variables
:root {
  --color-primary: #ef003f;
  --color-primary-rgb: 239 0 63;
  --color-primary-hsl: 344 100% 47%;
}
Gradient
.gradient-ef003f {
  background: linear-gradient(135deg, #ef003f, #ef3800);
}
Colored shadow
.shadow-ef003f {
  box-shadow: 0 8px 24px rgb(239 0 63 / 0.35);
}

#dc143c Crimson ΔE 3.64 #e52b50 Amaranth ΔE 3.90 #ff004f Folly ΔE 4.40 #fd0e35 Tractor Red ΔE 4.97 #e30022 Cadmium Red ΔE 6.76 #cc3333 Persian Red ΔE 7.13 #cb4154 Brick Red ΔE 7.34 #10ffc0 Inverted #787878 Grayscale 

Crimson
#ef003f  rgb(239, 0, 63)  hsl(344, 100%, 47%)  Crimson
#00efb0  rgb(0, 239, 176)  hsl(164, 100%, 47%)  Medium Spring Green
#3fef00  rgb(63, 239, 0)  hsl(104, 100%, 47%)  Neon Green
#003fef  rgb(0, 63, 239)  hsl(224, 100%, 47%)  Persian Blue