Colour

#6B001F

#6B001F
Red
Dark
Nearest: Brown

#6B001F is a red with RGB values 107, 0, 31 and HSL 343°, 100%, 21%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#6B001F#6B001F

HEX#6B001F

RGBrgb(107, 0, 31)

RGB (0–1)0.4196, 0, 0.1216

RGB percentages42%, 0%, 12.2%

HSLhsl(342.6, 100%, 21%)

HSV / HSBhsv(342.6, 100%, 42%)

CMYK0%, 100%, 71%, 58%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,012,383

CSS custom property--colour: #6B001F;

Brightness & contrast

Relative luminance0.03225WCAG 2.x, 0 is black and 1 is white

Perceived brightness59.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.77:1

Contrast with white12.77:1WCAG normal text: AAA

Contrast with black1.64:1WCAG normal text: Fail

Greyscale equivalent#191919

Inverted#94FFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#26251Fno red cones; affects about 1% of men; ΔE 45.9 from the original

Deuteranopia#403A1Cno green cones; the most common form, about 1% of men; ΔE 45.9 from the original

Tritanopia#76000Fno blue cones; rare, and affects men and women equally; ΔE 14.2 from the original

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

Contrast with white, large text12.77:1WCAG large text: AAA

Contrast with black, large text1.64:1WCAG large text: Fail

Named colours

Brown · ΔE 23.7 Maroon · ΔE 24.2 Dark red · ΔE 28.5 Firebrick · ΔE 31.8 Indian red · ΔE 33.3 Sienna · ΔE 33.9

Nearest named CSS colourBrown (#A52A2A)ΔE 23.74, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#006B4C

Analogous#6B0055, #6B1700

Triadic#1F6B00, #001F6B

Split complementary#006B17, #00556B

Tetradic#546B00, #006B4C, #16006B

Tints, shades & saturation

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

Lighter +40%#FF3872

Lighter +30%#FF054D

Lighter +20%#D1003D

Lighter +10%#9E002E

Darker −10%#380010

Darker −20%#050001

Darker −30%#000000

Darker −40%#000000

More saturated +25%#6B001F

Less saturated −25%#5E0D25

Channel breakdown

R107

B31

Red107 (42%)

Green0 (0%)

Blue31 (12.2%)

Hue342.62°

Saturation (HSL)100%

Lightness20.98%

Dominant channelRed

Hex per channelR 6B · G 00 · B 1F

Keep nerding

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#6B001F

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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