Recognised as Colour

#DD131F

#DD131F
Red
Dark
Nearest: Crimson

#DD131F is a red with RGB values 221, 19, 31 and HSL 356°, 84%, 47%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#DD131F#DD131F

HEX#DD131F

RGBrgb(221, 19, 31)

RGB (0–1)0.8667, 0.0745, 0.1216

RGB percentages86.7%, 7.5%, 12.2%

HSLhsl(356.4, 84.2%, 47.1%)

HSV / HSBhsv(356.4, 91.4%, 86.7%)

CMYK0%, 91.4%, 86%, 13.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,488,351

CSS custom property--colour: #DD131F;

Brightness & contrast

Relative luminance0.15937WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.02:1

Contrast with white5.02:1WCAG normal text: AA

Contrast with black4.19:1WCAG normal text: Fail

Greyscale equivalent#3F3F3F

Inverted#22ECE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F541Cno red cones; affects about 1% of men; ΔE 75.9 from the original

Deuteranopia#8D7E10no green cones; the most common form, about 1% of men; ΔE 76.3 from the original

Tritanopia#F4001Dno blue cones; rare, and affects men and women equally; ΔE 10.4 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.02:1WCAG large text: AAA

Contrast with black, large text4.19:1WCAG large text: AA

Named colours

Crimson · ΔE 16 Tomato · ΔE 20.1 Firebrick · ΔE 20.4 Red · ΔE 21.1 Orange red · ΔE 22.3 Dark red · ΔE 28.3

Nearest named CSS colourCrimson (#DC143C)ΔE 15.98, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#13DDD1

Analogous#DD1384, #DD6C13

Triadic#1FDD13, #131FDD

Split complementary#13DD6C, #1384DD

Tetradic#84DD13, #13DDD1, #6C13DD

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FAC2C6

Lighter +30%#F69399

Lighter +20%#F2646D

Lighter +10%#EE3540

Darker −10%#AE0F18

Darker −20%#7F0B12

Darker −30%#50070B

Darker −40%#210305

More saturated +25%#F0000E

Less saturated −25%#BF3139

Channel breakdown

R221

G19

B31

Red221 (86.7%)

Green19 (7.5%)

Blue31 (12.2%)

Hue356.44°

Saturation (HSL)84.17%

Lightness47.06%

Dominant channelRed

Hex per channelR DD · G 13 · B 1F

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#DD131F

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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