Colour

#40000B

#40000B
Red
Dark
Nearest: Black

#40000B is a red with RGB values 64, 0, 11 and HSL 350°, 100%, 13%. It is a dark colour, so white text on it reaches 17.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#40000B#40000B

HEX#40000B

RGBrgb(64, 0, 11)

RGB (0–1)0.251, 0, 0.0431

RGB percentages25.1%, 0%, 4.3%

HSLhsl(349.7, 100%, 12.5%)

HSV / HSBhsv(349.7, 100%, 25.1%)

CMYK0%, 100%, 82.8%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,194,315

CSS custom property--colour: #40000B;

Brightness & contrast

Relative luminance0.01114WCAG 2.x, 0 is black and 1 is white

Perceived brightness35.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.17:1

Contrast with white17.17:1WCAG normal text: AAA

Contrast with black1.22:1WCAG normal text: Fail

Greyscale equivalent#0E0E0E

Inverted#BFFFF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#14120Bno red cones; affects about 1% of men; ΔE 31.9 from the original

Deuteranopia#252009no green cones; the most common form, about 1% of men; ΔE 31.9 from the original

Tritanopia#470004no blue cones; rare, and affects men and women equally; ΔE 6 from the original

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

Contrast with white, large text17.17:1WCAG large text: AAA

Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Black · ΔE 33.7 Maroon · ΔE 35.9 Brown · ΔE 38.9 Saddle brown · ΔE 40.8 Dark red · ΔE 40.9 Sienna · ΔE 41.8

Nearest named CSS colourBlack (#000000)ΔE 33.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#004035

Analogous#40002B, #401500

Triadic#0B4000, #000B40

Split complementary#004015, #002B40

Tetradic#2B4000, #004035, #150040

Tints, shades & saturation

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

Lighter +40%#FF0D37

Lighter +30%#D90025

Lighter +20%#A6001D

Lighter +10%#730014

Darker −10%#0D0002

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#40000B

Less saturated −25%#380810

Channel breakdown

R64

B11

Red64 (25.1%)

Green0 (0%)

Blue11 (4.3%)

Hue349.69°

Saturation (HSL)100%

Lightness12.55%

Dominant channelRed

Hex per channelR 40 · G 00 · B 0B

Keep nerding

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

#40000B

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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