Recognised as Colour

#BB2636

#BB2636
Red
Dark
Nearest: Firebrick

#BB2636 is a red with RGB values 187, 38, 54 and HSL 354°, 66%, 44%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BB2636#BB2636

HEX#BB2636

RGBrgb(187, 38, 54)

RGB (0–1)0.7333, 0.149, 0.2118

RGB percentages73.3%, 14.9%, 21.2%

HSLhsl(353.6, 66.2%, 44.1%)

HSV / HSBhsv(353.6, 79.7%, 73.3%)

CMYK0%, 79.7%, 71.1%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,265,014

CSS custom property--colour: #BB2636;

Brightness & contrast

Relative luminance0.12217WCAG 2.x, 0 is black and 1 is white

Perceived brightness107.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.1:1

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

Contrast with black3.44:1WCAG normal text: Fail

Greyscale equivalent#474747

Inverted#44D9C9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#544E35no red cones; affects about 1% of men; ΔE 62.1 from the original

Deuteranopia#796D31no green cones; the most common form, about 1% of men; ΔE 62.1 from the original

Tritanopia#CE002Eno blue cones; rare, and affects men and women equally; ΔE 13.4 from the original

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

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

Contrast with black, large text3.44:1WCAG large text: AA

Named colours

Firebrick · ΔE 9.2 Brown · ΔE 9.5 Crimson · ΔE 14.6 Indian red · ΔE 19.2 Dark red · ΔE 19.5 Maroon · ΔE 21

Nearest named CSS colourFirebrick (#B22222)ΔE 9.17, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#26BBAB

Analogous#BB2680, #BB6126

Triadic#36BB26, #2636BB

Split complementary#26BB61, #2680BB

Tetradic#80BB26, #26BBAB, #6126BB

Tints, shades & saturation

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

Lighter +40%#F1BCC1

Lighter +30%#E9919B

Lighter +20%#E06774

Lighter +10%#D73D4D

Darker −10%#911D2A

Darker −20%#66151E

Darker −30%#3C0C11

Darker −40%#110405

More saturated +25%#D70A20

Less saturated −25%#9F424C

Channel breakdown

R187

G38

B54

Red187 (73.3%)

Green38 (14.9%)

Blue54 (21.2%)

Hue353.56°

Saturation (HSL)66.22%

Lightness44.12%

Dominant channelRed

Hex per channelR BB · G 26 · B 36

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB2636 (chemical formula)

Formula
28,505.97 g/mol
2637 atoms

BB2636 has a molar mass of 28,505.97 g/mol, made up of 2637 atoms across 1 element: 2637 × B.

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Molar mass

Molar mass28,505.97 g/mol

Total atoms per molecule2637

Distinct elements1

Mass of one molecule4.7335277 × 10^-20 g

Molecules per gram2.1125893 × 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 × 2637)28,505.97 g/mol, 100%

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Elements in this formula

Boron

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