Recognised as Colour

#B71C0E

#B71C0E
Red
Dark
Nearest: Firebrick

#B71C0E is a red with RGB values 183, 28, 14 and HSL 5°, 86%, 39%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B71C0E#B71C0E

HEX#B71C0E

RGBrgb(183, 28, 14)

RGB (0–1)0.7176, 0.1098, 0.0549

RGB percentages71.8%, 11%, 5.5%

HSLhsl(5, 85.8%, 38.6%)

HSV / HSBhsv(5, 92.3%, 71.8%)

CMYK0%, 84.7%, 92.3%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,000,270

CSS custom property--colour: #B71C0E;

Brightness & contrast

Relative luminance0.10929WCAG 2.x, 0 is black and 1 is white

Perceived brightness102.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.59:1

Contrast with white6.59:1WCAG normal text: AA

Contrast with black3.19:1WCAG normal text: Fail

Greyscale equivalent#3C3C3C

Inverted#48E3F1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#524707no red cones; affects about 1% of men; ΔE 62.8 from the original

Deuteranopia#776900no green cones; the most common form, about 1% of men; ΔE 63.1 from the original

Tritanopia#CA001Cno blue cones; rare, and affects men and women equally; ΔE 9.8 from the original

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

Contrast with white, large text6.59:1WCAG large text: AAA

Contrast with black, large text3.19:1WCAG large text: AA

Named colours

Firebrick · ΔE 10.7 Dark red · ΔE 15.2 Brown · ΔE 19.6 Maroon · ΔE 20 Crimson · ΔE 20.5 Tomato · ΔE 22.8

Nearest named CSS colourFirebrick (#B22222)ΔE 10.66, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0EA9B7

Analogous#B70E55, #B7700E

Triadic#0EB71C, #1C0EB7

Split complementary#0EB770, #0E55B7

Tetradic#55B70E, #0EA9B7, #710EB7

Tints, shades & saturation

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

Lighter +40%#F7A19A

Lighter +30%#F4766A

Lighter +20%#F04A3B

Lighter +10%#E62312

Darker −10%#88150A

Darker −20%#580E07

Darker −30%#290603

Darker −40%#000000

More saturated +25%#C51000

Less saturated −25%#9E3127

Channel breakdown

R183

G28

B14

Red183 (71.8%)

Green28 (11%)

Blue14 (5.5%)

Hue4.97°

Saturation (HSL)85.79%

Lightness38.63%

Dominant channelRed

Hex per channelR B7 · G 1C · B 0E

Keep nerding

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

#B71C0E

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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