ColorTool
Log in
#EF033F

#ef033f ≈ Crimson

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

#ef033f is a color from the rose family, with medium lightness and vivid saturation. In the RGB model it is made of 93.73% red, 1.18% green and 24.71% blue; printed in CMYK it uses 0% cyan, 98.74% magenta, 73.64% yellow and 6.27% black. Its hue angle is 344.75°, with 97.52% saturation and 47.45% 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 4.75:1 (WCAG AA). The closest named color is Crimson (#dc143c), ΔE 3.69.

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 luminance0.1877

Complementary

  1. #ef033f
  2. #03efb3

Split complementary

  1. #ef033f
  2. #03ef3d
  3. #03b5ef

Analogous

  1. #ef03b5
  2. #ef033f
  3. #ef3d03

Triadic

  1. #ef033f
  2. #3fef03
  3. #033fef

Tetradic

  1. #ef033f
  2. #efb303
  3. #03efb3
  4. #033fef

Square

  1. #ef033f
  2. #b5ef03
  3. #03efb3
  4. #3d03ef

Monochromatic

  1. #580117
  2. #a3022b
  3. #ef033f
  4. #fd4271
  5. #fe8daa

Shades

#ef033f mixed progressively with black.

  1. #ef033f
  2. #d70339
  3. #bf0232
  4. #a7022c
  5. #8f0226
  6. #780220
  7. #600119
  8. #480113
  9. #30010d
  10. #180006
  11. #000000

Tints

#ef033f mixed progressively with white.

  1. #ef033f
  2. #f11c52
  3. #f23565
  4. #f44f79
  5. #f5688c
  6. #f7819f
  7. #f99ab2
  8. #fab3c5
  9. #fccdd9
  10. #fde6ec
  11. #ffffff

Tones

#ef033f mixed progressively with gray.

  1. #ef033f
  2. #e41046
  3. #d91c4c
  4. #ce2953
  5. #c33559
  6. #b84260
  7. #ac4e66
  8. #a15b6d
  9. #966773
  10. #8b747a
  11. #808080

Readable text 4.42:1 AA ✕ AA Large ✓ AAA ✕ AAA Large ✕
Readable text 4.75:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #787878 ≈ 0.003% of males
Achromatomaly #b45e66 ≈ 0.001% of males
Protanopia #625b3e ≈ 1.01% of males
Deuteranopia #968837 ≈ 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-ef033f {
  color: #ef033f;
}
Background
.bg-ef033f {
  background-color: #ef033f;
  color: #000000;
}
Border
.border-ef033f {
  border: 2px solid #ef033f;
}
CSS variables
:root {
  --color-primary: #ef033f;
  --color-primary-rgb: 239 3 63;
  --color-primary-hsl: 345 98% 47%;
}
Gradient
.gradient-ef033f {
  background: linear-gradient(135deg, #ef033f, #ef3d03);
}
Colored shadow
.shadow-ef033f {
  box-shadow: 0 8px 24px rgb(239 3 63 / 0.35);
}

#dc143c Crimson ΔE 3.69 #e52b50 Amaranth ΔE 3.94 #ff004f Folly ΔE 4.40 #fd0e35 Tractor Red ΔE 4.87 #e30022 Cadmium Red ΔE 6.72 #cc3333 Persian Red ΔE 7.10 #cb4154 Brick Red ΔE 7.37 #10fcc0 Inverted #787878 Grayscale 

Crimson
#ef033f  rgb(239, 3, 63)  hsl(345, 98%, 47%)  Crimson
#03efb3  rgb(3, 239, 179)  hsl(165, 98%, 47%)  Medium Spring Green
#3fef03  rgb(63, 239, 3)  hsl(105, 98%, 47%)  Neon Green
#033fef  rgb(3, 63, 239)  hsl(225, 98%, 47%)  Persian Blue