Recognised as Colour

#B11933

#B11933
Red
Dark
Nearest: Brown

#B11933 is a red with RGB values 177, 25, 51 and HSL 350°, 75%, 40%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#B11933#B11933

HEX#B11933

RGBrgb(177, 25, 51)

RGB (0–1)0.6941, 0.098, 0.2

RGB percentages69.4%, 9.8%, 20%

HSLhsl(349.7, 75.2%, 39.6%)

HSV / HSBhsv(349.7, 85.9%, 69.4%)

CMYK0%, 85.9%, 71.2%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,606,323

CSS custom property--colour: #B11933;

Brightness & contrast

Relative luminance0.10281WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.87:1

Contrast with white6.87:1WCAG normal text: AA

Contrast with black3.06:1WCAG normal text: Fail

Greyscale equivalent#3B3B3B

Inverted#4EE6CC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4B4633no red cones; affects about 1% of men; ΔE 62.2 from the original

Deuteranopia#70652Eno green cones; the most common form, about 1% of men; ΔE 62.2 from the original

Tritanopia#C30025no blue cones; rare, and affects men and women equally; ΔE 14.6 from the original

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

Contrast with white, large text6.87:1WCAG large text: AAA

Contrast with black, large text3.06:1WCAG large text: AA

Named colours

Brown · ΔE 9.7 Firebrick · ΔE 11.4 Crimson · ΔE 16.7 Dark red · ΔE 19.4 Maroon · ΔE 20.1 Indian red · ΔE 20.8

Nearest named CSS colourBrown (#A52A2A)ΔE 9.68, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#19B197

Analogous#B1197F, #B14B19

Triadic#33B119, #1933B1

Split complementary#19B14B, #197FB1

Tetradic#7FB119, #19B197, #4B19B1

Tints, shades & saturation

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

Lighter +40%#F2A4B1

Lighter +30%#EC778B

Lighter +20%#E64A65

Lighter +10%#DE1F40

Darker −10%#841326

Darker −20%#580C19

Darker −30%#2B060C

Darker −40%#000000

More saturated +25%#CA0023

Less saturated −25%#983244

Channel breakdown

R177

G25

B51

Red177 (69.4%)

Green25 (9.8%)

Blue51 (20%)

Hue349.74°

Saturation (HSL)75.25%

Lightness39.61%

Dominant channelRed

Hex per channelR B1 · G 19 · B 33

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B11933 (chemical formula)

Formula
128,995.73 g/mol
11933 atoms

B11933 has a molar mass of 128,995.73 g/mol, made up of 11933 atoms across 1 element: 11933 × B.

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Molar mass

Molar mass128,995.73 g/mol

Total atoms per molecule11933

Distinct elements1

Mass of one molecule2.1420245 × 10^-19 g

Molecules per gram4.6684807 × 10^18

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

B100%

Boron (B × 11933)128,995.73 g/mol, 100%

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Elements in this formula

Boron

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