Recognised as Colour
#BB8B28
- #BB8B28
- Orange
- Dark
- Nearest: Dark goldenrod
#BB8B28 is a orange with RGB values 187, 139, 40 and HSL 40°, 65%, 45%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark goldenrod.
Colour values
#BB8B28#BB8B28
HEX#BB8B28
RGBrgb(187, 139, 40)
RGB (0–1)0.7333, 0.5451, 0.1569
RGB percentages73.3%, 54.5%, 15.7%
HSLhsl(40.4, 64.8%, 44.5%)
HSV / HSBhsv(40.4, 78.6%, 73.3%)
CMYK0%, 25.7%, 78.6%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,290,856
CSS custom property--colour: #BB8B28;
Brightness & contrast
Relative luminance0.29183WCAG 2.x, 0 is black and 1 is white
Perceived brightness148.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.84:1
Contrast with white3.07:1WCAG normal text: Fail
Contrast with black6.84:1WCAG normal text: AA
Greyscale equivalent#8E8E8E
Inverted#4474D7
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.07:1WCAG large text: AA
Contrast with black, large text6.84:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2858BB
Analogous#BB4228, #A1BB28
Triadic#28BB8B, #8B28BB
Split complementary#28A1BB, #4228BB
Tetradic#28BB42, #2858BB, #BB28A1
Tints, shades & saturation
Channel breakdown
R187
G139
B40
Red187 (73.3%)
Green139 (54.5%)
Blue40 (15.7%)
Hue40.41°
Saturation (HSL)64.76%
Lightness44.51%
Dominant channelRed
Hex per channelR BB · G 8B · B 28
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Harmonies
Similar named colours
Also reads as
BB8B28 (chemical formula)
- Formula
- 399.97 g/mol
- 37 atoms
BB8B28 has a molar mass of 399.97 g/mol, made up of 37 atoms across 1 element: 37 × B.
Molar mass
Molar mass399.97 g/mol
Total atoms per molecule37
Distinct elements1
Mass of one molecule6.6416581 × 10^-22 g
Molecules per gram1.5056481 × 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 × 37)399.97 g/mol, 100%
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