Recognised as Colour

#51191B

#51191B
Red
Dark
Nearest: Maroon

#51191B is a red with RGB values 81, 25, 27 and HSL 358°, 53%, 21%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#51191B#51191B

HEX#51191B

RGBrgb(81, 25, 27)

RGB (0–1)0.3176, 0.098, 0.1059

RGB percentages31.8%, 9.8%, 10.6%

HSLhsl(357.9, 52.8%, 20.8%)

HSV / HSBhsv(357.9, 69.1%, 31.8%)

CMYK0%, 69.1%, 66.7%, 68.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,314,843

CSS custom property--colour: #51191B;

Brightness & contrast

Relative luminance0.02524WCAG 2.x, 0 is black and 1 is white

Perceived brightness49.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.96:1

Contrast with white13.96:1WCAG normal text: AAA

Contrast with black1.5:1WCAG normal text: Fail

Greyscale equivalent#252525

Inverted#AEE6E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#27251Bno red cones; affects about 1% of men; ΔE 28.4 from the original

Deuteranopia#35301Ano green cones; the most common form, about 1% of men; ΔE 28.1 from the original

Tritanopia#590E1Ano blue cones; rare, and affects men and women equally; ΔE 7.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text13.96:1WCAG large text: AAA

Contrast with black, large text1.5:1WCAG large text: Fail

Named colours

Maroon · ΔE 34.2 Saddle brown · ΔE 34.3 Black · ΔE 34.4 Sienna · ΔE 34.6 Brown · ΔE 35.2 Dark red · ΔE 39

Nearest named CSS colourMaroon (#800000)ΔE 34.15, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#19514F

Analogous#511937, #513319

Triadic#1B5119, #191B51

Split complementary#195133, #193751

Tetradic#375119, #19514F, #331951

Tints, shades & saturation

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

Lighter +40%#D0666A

Lighter +30%#C43F44

Lighter +20%#9F3135

Lighter +10%#782528

Darker −10%#2A0D0E

Darker −20%#030101

Darker −30%#000000

Darker −40%#000000

More saturated +25%#5E0C0F

Less saturated −25%#442627

Channel breakdown

R81

G25

B27

Red81 (31.8%)

Green25 (9.8%)

Blue27 (10.6%)

Hue357.86°

Saturation (HSL)52.83%

Lightness20.78%

Dominant channelRed

Hex per channelR 51 · G 19 · B 1B

Keep nerding

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#51191B

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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