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Recognised as Colour

#DD212A

  • #DD212A
  • Red
  • Dark
  • Nearest: Crimson

#DD212A is a red with RGB values 221, 33, 42 and HSL 357°, 74%, 50%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#DD212A#DD212A
HEX#DD212A
RGBrgb(221, 33, 42)
RGB (0–1)0.8667, 0.1294, 0.1647
RGB percentages86.7%, 12.9%, 16.5%
HSLhsl(357.1, 74%, 49.8%)
HSV / HSBhsv(357.1, 85.1%, 86.7%)
CMYK0%, 85.1%, 81%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer14,491,946
CSS custom property--colour: #DD212A;

Brightness & contrast

Relative luminance0.16627WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.86:1
Contrast with white4.86:1WCAG normal text: AA
Contrast with black4.33:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#22DED5

Colour vision & accessibility

Protanopia#625828no red cones; affects about 1% of men; ΔE 73.7 from the original
Deuteranopia#8F7F20no green cones; the most common form, about 1% of men; ΔE 73.3 from the original
Tritanopia#F40028no blue cones; rare, and affects men and women equally; ΔE 11.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.86:1WCAG large text: AAA
Contrast with black, large text4.33:1WCAG large text: AA

Named colours

Nearest named CSS colourCrimson (#DC143C)ΔE 11.45, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#21DDD4
Analogous#DD2188, #DD7621
Triadic#2ADD21, #212ADD
Split complementary#21DD76, #2188DD
Tetradic#88DD21, #21DDD4, #7621DD

Tints, shades & saturation

Lighter +40%#F8D2D4
Lighter +30%#F2A5A9
Lighter +20%#EB797E
Lighter +10%#E44D54
Darker −10%#B11A22
Darker −20%#841419
Darker −30%#580D11
Darker −40%#2C0608
More saturated +25%#FD010D
Less saturated −25%#BD4147

Channel breakdown

R221
G33
B42
Red221 (86.7%)
Green33 (12.9%)
Blue42 (16.5%)
Hue357.13°
Saturation (HSL)74.02%
Lightness49.8%
Dominant channelRed
Hex per channelR DD · G 21 · B 2A

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Every value on this page was computed from “dd212a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.