Recognised as Colour

#8B001F

#8B001F
Red
Dark
Nearest: Brown

#8B001F is a red with RGB values 139, 0, 31 and HSL 347°, 100%, 27%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#8B001F#8B001F

HEX#8B001F

RGBrgb(139, 0, 31)

RGB (0–1)0.5451, 0, 0.1216

RGB percentages54.5%, 0%, 12.2%

HSLhsl(346.6, 100%, 27.3%)

HSV / HSBhsv(346.6, 100%, 54.5%)

CMYK0%, 100%, 77.7%, 45.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,109,535

CSS custom property--colour: #8B001F;

Brightness & contrast

Relative luminance0.05588WCAG 2.x, 0 is black and 1 is white

Perceived brightness76.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.92:1

Contrast with white9.92:1WCAG normal text: AAA

Contrast with black2.12:1WCAG normal text: Fail

Greyscale equivalent#202020

Inverted#74FFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#36311Fno red cones; affects about 1% of men; ΔE 55 from the original

Deuteranopia#554C1Ano green cones; the most common form, about 1% of men; ΔE 55.2 from the original

Tritanopia#9A0010no blue cones; rare, and affects men and women equally; ΔE 13.9 from the original

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

Contrast with white, large text9.92:1WCAG large text: AAA

Contrast with black, large text2.12:1WCAG large text: Fail

Named colours

Brown · ΔE 10.7 Maroon · ΔE 13.4 Dark red · ΔE 15.8 Firebrick · ΔE 16.8 Indian red · ΔE 26.2 Crimson · ΔE 28

Nearest named CSS colourBrown (#A52A2A)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#008B6C

Analogous#8B0064, #8B2700

Triadic#1F8B00, #001F8B

Split complementary#008B27, #00648B

Tetradic#648B00, #008B6C, #27008B

Tints, shades & saturation

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

Lighter +40%#FF587D

Lighter +30%#FF2556

Lighter +20%#F10036

Lighter +10%#BE002A

Darker −10%#580014

Darker −20%#250008

Darker −30%#000000

Darker −40%#000000

More saturated +25%#8B001F

Less saturated −25%#7A1129

Channel breakdown

R139

B31

Red139 (54.5%)

Green0 (0%)

Blue31 (12.2%)

Hue346.62°

Saturation (HSL)100%

Lightness27.25%

Dominant channelRed

Hex per channelR 8B · G 00 · B 1F

Keep nerding

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

#8B001F

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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