Colour

#8B0504

#8B0504
Red
Dark
Nearest: Dark red

#8B0504 is a red with RGB values 139, 5, 4 and HSL 0°, 94%, 28%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#8B0504#8B0504

HEX#8B0504

RGBrgb(139, 5, 4)

RGB (0–1)0.5451, 0.0196, 0.0157

RGB percentages54.5%, 2%, 1.6%

HSLhsl(0.4, 94.4%, 28%)

HSV / HSBhsv(0.4, 97.1%, 54.5%)

CMYK0%, 96.4%, 97.1%, 45.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,110,788

CSS custom property--colour: #8B0504;

Brightness & contrast

Relative luminance0.05606WCAG 2.x, 0 is black and 1 is white

Perceived brightness76.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.9:1

Contrast with white9.9:1WCAG normal text: AAA

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

Greyscale equivalent#212121

Inverted#74FAFB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#393101no red cones; affects about 1% of men; ΔE 54.4 from the original

Deuteranopia#574D00no green cones; the most common form, about 1% of men; ΔE 54.3 from the original

Tritanopia#9A0009no blue cones; rare, and affects men and women equally; ΔE 6.1 from the original

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

Contrast with white, large text9.9:1WCAG large text: AAA

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

Named colours

Dark red · ΔE 1.6 Maroon · ΔE 4.1 Firebrick · ΔE 12.3 Brown · ΔE 13.1 Saddle brown · ΔE 25.5 Sienna · ΔE 26.3

Nearest named CSS colourDark red (#8B0000)ΔE 1.6, below the just-noticeable difference

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#048A8B

Analogous#8B0446, #8B4904

Triadic#048B05, #05048B

Split complementary#048B49, #04468B

Tetradic#468B04, #048A8B, #49048B

Tints, shades & saturation

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

Lighter +40%#FA6261

Lighter +30%#F9302F

Lighter +20%#EE0907

Lighter +10%#BD0705

Darker −10%#590303

Darker −20%#280101

Darker −30%#000000

Darker −40%#000000

More saturated +25%#8F0100

Less saturated −25%#791716

Channel breakdown

R139

Red139 (54.5%)

Green5 (2%)

Blue4 (1.6%)

Hue0.44°

Saturation (HSL)94.41%

Lightness28.04%

Dominant channelRed

Hex per channelR 8B · G 05 · B 04

Keep nerding

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#8B0504

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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