Colour

#47180B

#47180B
Red
Dark
Nearest: Saddle brown

#47180B is a red with RGB values 71, 24, 11 and HSL 13°, 73%, 16%. It is a dark colour, so white text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#47180B#47180B

HEX#47180B

RGBrgb(71, 24, 11)

RGB (0–1)0.2784, 0.0941, 0.0431

RGB percentages27.8%, 9.4%, 4.3%

HSLhsl(13, 73.2%, 16.1%)

HSV / HSBhsv(13, 84.5%, 27.8%)

CMYK0%, 66.2%, 84.5%, 72.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,659,211

CSS custom property--colour: #47180B;

Brightness & contrast

Relative luminance0.02017WCAG 2.x, 0 is black and 1 is white

Perceived brightness43.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.96:1

Contrast with white14.96:1WCAG normal text: AAA

Contrast with black1.4:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#B8E7F4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#252009no red cones; affects about 1% of men; ΔE 23.7 from the original

Deuteranopia#312B0Ano green cones; the most common form, about 1% of men; ΔE 23.9 from the original

Tritanopia#4F0D15no blue cones; rare, and affects men and women equally; ΔE 10.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.96:1WCAG large text: AAA

Contrast with black, large text1.4:1WCAG large text: Fail

Named colours

Saddle brown · ΔE 31.4 Black · ΔE 32.8 Sienna · ΔE 33.6 Maroon · ΔE 34 Brown · ΔE 37.4 Dark red · ΔE 38.9

Nearest named CSS colourSaddle brown (#8B4513)ΔE 31.38, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B3A47

Analogous#470B1C, #47360B

Triadic#0B4718, #180B47

Split complementary#0B4736, #0B1C47

Tetradic#1C470B, #0B3A47, #360B47

Tints, shades & saturation

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

Lighter +40%#E1613D

Lighter +30%#CB4520

Lighter +20%#9F3619

Lighter +10%#732712

Darker −10%#1B0904

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#511201

Less saturated −25%#3D1E15

Channel breakdown

R71

G24

B11

Red71 (27.8%)

Green24 (9.4%)

Blue11 (4.3%)

Hue13°

Saturation (HSL)73.17%

Lightness16.08%

Dominant channelRed

Hex per channelR 47 · G 18 · B 0B

Keep nerding

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#47180B

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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