Recognised as Colour

#BB8173

#BB8173
Red
Dark
Nearest: Rosy brown

#BB8173 is a red with RGB values 187, 129, 115 and HSL 12°, 35%, 59%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Rosy brown.

Colour values

#BB8173#BB8173

HEX#BB8173

RGBrgb(187, 129, 115)

RGB (0–1)0.7333, 0.5059, 0.451

RGB percentages73.3%, 50.6%, 45.1%

HSLhsl(11.7, 34.6%, 59.2%)

HSV / HSBhsv(11.7, 38.5%, 73.3%)

CMYK0%, 31%, 38.5%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,288,371

CSS custom property--colour: #BB8173;

Brightness & contrast

Relative luminance0.27503WCAG 2.x, 0 is black and 1 is white

Perceived brightness147.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.5:1

Contrast with white3.23:1WCAG normal text: Fail

Contrast with black6.5:1WCAG normal text: AA

Greyscale equivalent#8C8C8C

Inverted#447E8C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8E8872no red cones; affects about 1% of men; ΔE 22.8 from the original

Deuteranopia#9C9472no green cones; the most common form, about 1% of men; ΔE 23.5 from the original

Tritanopia#C8797Dno blue cones; rare, and affects men and women equally; ΔE 12 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.23:1WCAG large text: AA

Contrast with black, large text6.5:1WCAG large text: AAA

Named colours

Rosy brown · ΔE 11.4 Dark salmon · ΔE 17 Tan · ΔE 23.4 Light coral · ΔE 23.4 Indian red · ΔE 25.5 Light pink · ΔE 25.6

Nearest named CSS colourRosy brown (#BC8F8F)ΔE 11.43, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#73ADBB

Analogous#BB7389, #BBA573

Triadic#73BB81, #8173BB

Split complementary#73BBA5, #7389BB

Tetradic#89BB73, #73ADBB, #A573BB

Tints, shades & saturation

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

Lighter +40%#FEFDFC

Lighter +30%#EDDEDA

Lighter +20%#DCBFB8

Lighter +10%#CCA095

Darker −10%#A96352

Darker −20%#874F41

Darker −30%#643B31

Darker −40%#422720

More saturated +25%#D57159

Less saturated −25%#A1918D

Channel breakdown

R187

G129

B115

Red187 (73.3%)

Green129 (50.6%)

Blue115 (45.1%)

Hue11.67°

Saturation (HSL)34.62%

Lightness59.22%

Dominant channelRed

Hex per channelR BB · G 81 · B 73

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB8173 (chemical formula)

Formula
88,360.94 g/mol
8174 atoms

BB8173 has a molar mass of 88,360.94 g/mol, made up of 8174 atoms across 1 element: 8174 × B.

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Molar mass

Molar mass88,360.94 g/mol

Total atoms per molecule8174

Distinct elements1

Mass of one molecule1.4672679 × 10^-19 g

Molecules per gram6.8153878 × 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 × 8174)88,360.94 g/mol, 100%

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Elements in this formula

Boron

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