Recognised as Colour

#BB3943

#BB3943
Red
Dark
Nearest: Brown

#BB3943 is a red with RGB values 187, 57, 67 and HSL 355°, 53%, 48%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#BB3943#BB3943

HEX#BB3943

RGBrgb(187, 57, 67)

RGB (0–1)0.7333, 0.2235, 0.2627

RGB percentages73.3%, 22.4%, 26.3%

HSLhsl(355.4, 53.3%, 47.8%)

HSV / HSBhsv(355.4, 69.5%, 73.3%)

CMYK0%, 69.5%, 64.2%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,269,891

CSS custom property--colour: #BB3943;

Brightness & contrast

Relative luminance0.13896WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.56:1

Contrast with white5.56:1WCAG normal text: AA

Contrast with black3.78:1WCAG normal text: Fail

Greyscale equivalent#555555

Inverted#44C6BC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C5742no red cones; affects about 1% of men; ΔE 55.9 from the original

Deuteranopia#7D723Fno green cones; the most common form, about 1% of men; ΔE 56.1 from the original

Tritanopia#CD153Eno blue cones; rare, and affects men and women equally; ΔE 15.1 from the original

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

Contrast with white, large text5.56:1WCAG large text: AAA

Contrast with black, large text3.78:1WCAG large text: AA

Named colours

Brown · ΔE 9.5 Indian red · ΔE 12.2 Firebrick · ΔE 14.6 Crimson · ΔE 20.9 Dark red · ΔE 23.4 Maroon · ΔE 23.5

Nearest named CSS colourBrown (#A52A2A)ΔE 9.46, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#39BBB1

Analogous#BB3984, #BB7039

Triadic#43BB39, #3943BB

Split complementary#39BB70, #3984BB

Tetradic#84BB39, #39BBB1, #7039BB

Tints, shades & saturation

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

Lighter +40%#F1CFD2

Lighter +30%#E5A8AD

Lighter +20%#D98188

Lighter +10%#CD5A63

Darker −10%#942D35

Darker −20%#6D2127

Darker −30%#461519

Darker −40%#1F090B

More saturated +25%#D91A29

Less saturated −25%#9C575D

Channel breakdown

R187

G57

B67

Red187 (73.3%)

Green57 (22.4%)

Blue67 (26.3%)

Hue355.38°

Saturation (HSL)53.28%

Lightness47.84%

Dominant channelRed

Hex per channelR BB · G 39 · B 43

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB3943 (chemical formula)

Formula
42,634.64 g/mol
3944 atoms

BB3943 has a molar mass of 42,634.64 g/mol, made up of 3944 atoms across 1 element: 3944 × B.

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Molar mass

Molar mass42,634.64 g/mol

Total atoms per molecule3944

Distinct elements1

Mass of one molecule7.0796485 × 10^-20 g

Molecules per gram1.4124995 × 10^19

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 × 3944)42,634.64 g/mol, 100%

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Elements in this formula

Boron

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