Recognised as Colour

#BB4122

#BB4122
Red
Dark
Nearest: Firebrick

#BB4122 is a red with RGB values 187, 65, 34 and HSL 12°, 69%, 43%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BB4122#BB4122

HEX#BB4122

RGBrgb(187, 65, 34)

RGB (0–1)0.7333, 0.2549, 0.1333

RGB percentages73.3%, 25.5%, 13.3%

HSLhsl(12.2, 69.2%, 43.3%)

HSV / HSBhsv(12.2, 81.8%, 73.3%)

CMYK0%, 65.2%, 81.8%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,271,906

CSS custom property--colour: #BB4122;

Brightness & contrast

Relative luminance0.14461WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.4:1

Contrast with white5.4:1WCAG normal text: AA

Contrast with black3.89:1WCAG normal text: Fail

Greyscale equivalent#595959

Inverted#44BEDD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#64591Dno red cones; affects about 1% of men; ΔE 52.2 from the original

Deuteranopia#82741Cno green cones; the most common form, about 1% of men; ΔE 52.5 from the original

Tritanopia#CE1D3Bno blue cones; rare, and affects men and women equally; ΔE 22.4 from the original

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

Contrast with white, large text5.4:1WCAG large text: AAA

Contrast with black, large text3.89:1WCAG large text: AA

Named colours

Firebrick · ΔE 11.8 Brown · ΔE 15.3 Dark red · ΔE 17.3 Chocolate · ΔE 20 Sienna · ΔE 20.1 Maroon · ΔE 20.2

Nearest named CSS colourFirebrick (#B22222)ΔE 11.84, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#229CBB

Analogous#BB2250, #BB8D22

Triadic#22BB41, #4122BB

Split complementary#22BB8D, #2250BB

Tetradic#50BB22, #229CBB, #8D22BB

Tints, shades & saturation

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

Lighter +40%#F2C3B7

Lighter +30%#EA9F8C

Lighter +20%#E27B61

Lighter +10%#DA5736

Darker −10%#90321A

Darker −20%#652312

Darker −30%#3A140A

Darker −40%#0E0503

More saturated +25%#D73106

Less saturated −25%#9F513E

Channel breakdown

R187

G65

B34

Red187 (73.3%)

Green65 (25.5%)

Blue34 (13.3%)

Hue12.16°

Saturation (HSL)69.23%

Lightness43.33%

Dominant channelRed

Hex per channelR BB · G 41 · B 22

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB4122 (chemical formula)

Formula
44,569.63 g/mol
4123 atoms

BB4122 has a molar mass of 44,569.63 g/mol, made up of 4123 atoms across 1 element: 4123 × B.

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Molar mass

Molar mass44,569.63 g/mol

Total atoms per molecule4123

Distinct elements1

Mass of one molecule7.4009612 × 10^-20 g

Molecules per gram1.3511758 × 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 × 4123)44,569.63 g/mol, 100%

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Elements in this formula

Boron

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