Recognised as Colour

#B11B48

#B11B48
Red
Dark
Nearest: Brown

#B11B48 is a red with RGB values 177, 27, 72 and HSL 342°, 74%, 40%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#B11B48#B11B48

HEX#B11B48

RGBrgb(177, 27, 72)

RGB (0–1)0.6941, 0.1059, 0.2824

RGB percentages69.4%, 10.6%, 28.2%

HSLhsl(342, 73.5%, 40%)

HSV / HSBhsv(342, 84.7%, 69.4%)

CMYK0%, 84.7%, 59.3%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,606,856

CSS custom property--colour: #B11B48;

Brightness & contrast

Relative luminance0.10599WCAG 2.x, 0 is black and 1 is white

Perceived brightness101.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.73:1

Contrast with white6.73:1WCAG normal text: AA

Contrast with black3.12:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#4EE4B7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#484849no red cones; affects about 1% of men; ΔE 61.4 from the original

Deuteranopia#6E6644no green cones; the most common form, about 1% of men; ΔE 62.1 from the original

Tritanopia#C20030no blue cones; rare, and affects men and women equally; ΔE 19.5 from the original

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

Contrast with white, large text6.73:1WCAG large text: AAA

Contrast with black, large text3.12:1WCAG large text: AA

Named colours

Brown · ΔE 19.1 Indian red · ΔE 22 Firebrick · ΔE 23.9 Crimson · ΔE 24.2 Pale violetred · ΔE 29 Maroon · ΔE 29.7

Nearest named CSS colourBrown (#A52A2A)ΔE 19.14, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BB184

Analogous#B11B93, #B1391B

Triadic#48B11B, #1B48B1

Split complementary#1BB139, #1B93B1

Tetradic#93B11B, #1BB184, #391BB1

Tints, shades & saturation

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

Lighter +40%#F2A7BD

Lighter +30%#EB7A9C

Lighter +20%#E44E7B

Lighter +10%#DD225A

Darker −10%#851436

Darker −20%#590E24

Darker −30%#2C0712

Darker −40%#000000

More saturated +25%#CB013E

Less saturated −25%#983552

Channel breakdown

R177

G27

B72

Red177 (69.4%)

Green27 (10.6%)

Blue72 (28.2%)

Hue342°

Saturation (HSL)73.53%

Lightness40%

Dominant channelRed

Hex per channelR B1 · G 1B · B 48

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B11B48 (chemical formula)

Formula
637.79 g/mol
59 atoms

B11B48 has a molar mass of 637.79 g/mol, made up of 59 atoms across 1 element: 59 × B.

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Molar mass

Molar mass637.79 g/mol

Total atoms per molecule59

Distinct elements1

Mass of one molecule1.0590752 × 10^-21 g

Molecules per gram9.4422 × 10^20

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 × 59)637.79 g/mol, 100%

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Elements in this formula

Boron

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