Colour

#1B000B

#1B000B
Red
Dark
Nearest: Black

#1B000B is a red with RGB values 27, 0, 11 and HSL 336°, 100%, 5%. It is a dark colour, so white text on it reaches 20:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1B000B#1B000B

HEX#1B000B

RGBrgb(27, 0, 11)

RGB (0–1)0.1059, 0, 0.0431

RGB percentages10.6%, 0%, 4.3%

HSLhsl(335.6, 100%, 5.3%)

HSV / HSBhsv(335.6, 100%, 10.6%)

CMYK0%, 100%, 59.3%, 89.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,769,483

CSS custom property--colour: #1B000B;

Brightness & contrast

Relative luminance0.00257WCAG 2.x, 0 is black and 1 is white

Perceived brightness15.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 19.97:1

Contrast with white19.97:1WCAG normal text: AAA

Contrast with black1.05:1WCAG normal text: Fail

Greyscale equivalent#070707

Inverted#E4FFF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#03050Bno red cones; affects about 1% of men; ΔE 10.8 from the original

Deuteranopia#0B0B0Ano green cones; the most common form, about 1% of men; ΔE 11.2 from the original

Tritanopia#1E0004no blue cones; rare, and affects men and women equally; ΔE 3.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text19.97:1WCAG large text: AAA

Contrast with black, large text1.05:1WCAG large text: Fail

Named colours

Black · ΔE 11.3 Dark slate grey · ΔE 36.9 Dim grey · ΔE 43.5 Dark slateblue · ΔE 52.3 Gray · ΔE 52.4 Slate grey · ΔE 53.1

Nearest named CSS colourBlack (#000000)ΔE 11.25, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#001B10

Analogous#1B0018, #1B0200

Triadic#0B1B00, #000B1B

Split complementary#001B03, #00181B

Tetradic#191B00, #001B10, #03001B

Tints, shades & saturation

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

Lighter +40%#E7005E

Lighter +30%#B40049

Lighter +20%#810035

Lighter +10%#4E0020

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#1B000B

Less saturated −25%#18030C

Channel breakdown

R27

B11

Red27 (10.6%)

Green0 (0%)

Blue11 (4.3%)

Hue335.56°

Saturation (HSL)100%

Lightness5.29%

Dominant channelRed

Hex per channelR 1B · G 00 · B 0B

Keep nerding

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

#1B000B

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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