Recognised as Colour
#BB5B2B
- #BB5B2B
- Orange
- Dark
- Nearest: Sienna
#BB5B2B is a orange with RGB values 187, 91, 43 and HSL 20°, 63%, 45%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Sienna.
Colour values
#BB5B2B#BB5B2B
HEX#BB5B2B
RGBrgb(187, 91, 43)
RGB (0–1)0.7333, 0.3569, 0.1686
RGB percentages73.3%, 35.7%, 16.9%
HSLhsl(20, 62.6%, 45.1%)
HSV / HSBhsv(20, 77%, 73.3%)
CMYK0%, 51.3%, 77%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,278,571
CSS custom property--colour: #BB5B2B;
Brightness & contrast
Relative luminance0.18221WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.64:1
Contrast with white4.52:1WCAG normal text: AA
Contrast with black4.64:1WCAG normal text: AA
Greyscale equivalent#6C6C6C
Inverted#44A4D4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.52:1WCAG large text: AAA
Contrast with black, large text4.64:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2B8BBB
Analogous#BB2B43, #BBA32B
Triadic#2BBB5B, #5B2BBB
Split complementary#2BBBA3, #2B43BB
Tetradic#43BB2B, #2B8BBB, #A32BBB
Tints, shades & saturation
Channel breakdown
R187
G91
B43
Red187 (73.3%)
Green91 (35.7%)
Blue43 (16.9%)
Hue20°
Saturation (HSL)62.61%
Lightness45.1%
Dominant channelRed
Hex per channelR BB · G 5B · B 2B
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Also reads as
BB5B2B (chemical formula)
- Formula
- 97.29 g/mol
- 9 atoms
BB5B2B has a molar mass of 97.29 g/mol, made up of 9 atoms across 1 element: 9 × B.
Molar mass
Molar mass97.29 g/mol
Total atoms per molecule9
Distinct elements1
Mass of one molecule1.6155385 × 10^-22 g
Molecules per gram6.1898867 × 10^21
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 × 9)97.29 g/mol, 100%
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