Recognised as Colour

#571B11

#571B11
Red
Dark
Nearest: Saddle brown

#571B11 is a red with RGB values 87, 27, 17 and HSL 9°, 67%, 20%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#571B11#571B11

HEX#571B11

RGBrgb(87, 27, 17)

RGB (0–1)0.3412, 0.1059, 0.0667

RGB percentages34.1%, 10.6%, 6.7%

HSLhsl(8.6, 67.3%, 20.4%)

HSV / HSBhsv(8.6, 80.5%, 34.1%)

CMYK0%, 69%, 80.5%, 65.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,708,561

CSS custom property--colour: #571B11;

Brightness & contrast

Relative luminance0.02851WCAG 2.x, 0 is black and 1 is white

Perceived brightness52.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.37:1

Contrast with white13.37:1WCAG normal text: AAA

Contrast with black1.57:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#A8E4EE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2C2710no red cones; affects about 1% of men; ΔE 29.5 from the original

Deuteranopia#3B340Fno green cones; the most common form, about 1% of men; ΔE 29.5 from the original

Tritanopia#600C19no blue cones; rare, and affects men and women equally; ΔE 10.9 from the original

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

Contrast with white, large text13.37:1WCAG large text: AAA

Contrast with black, large text1.57:1WCAG large text: Fail

Named colours

Saddle brown · ΔE 26.6 Maroon · ΔE 27.4 Sienna · ΔE 28.3 Brown · ΔE 30.3 Dark red · ΔE 32.3 Indian red · ΔE 38.3

Nearest named CSS colourSaddle brown (#8B4513)ΔE 26.64, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#114D57

Analogous#57112A, #573E11

Triadic#11571B, #1B1157

Split complementary#11573E, #112A57

Tetradic#2A5711, #114D57, #3E1157

Tints, shades & saturation

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

Lighter +40%#DE6956

Lighter +30%#D6442B

Lighter +20%#AC3522

Lighter +10%#822819

Darker −10%#2C0E09

Darker −20%#020100

Darker −30%#000000

Darker −40%#000000

More saturated +25%#641204

Less saturated −25%#4A241E

Channel breakdown

R87

G27

B17

Red87 (34.1%)

Green27 (10.6%)

Blue17 (6.7%)

Hue8.57°

Saturation (HSL)67.31%

Lightness20.39%

Dominant channelRed

Hex per channelR 57 · G 1B · B 11

Keep nerding

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

#571B11

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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