Recognised as Colour
#B56839
- #B56839
- Orange
- Dark
- Nearest: Sienna
#B56839 is a orange with RGB values 181, 104, 57 and HSL 23°, 52%, 47%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Sienna.
Colour values
#B56839#B56839
HEX#B56839
RGBrgb(181, 104, 57)
RGB (0–1)0.7098, 0.4078, 0.2235
RGB percentages71%, 40.8%, 22.4%
HSLhsl(22.7, 52.1%, 46.7%)
HSV / HSBhsv(22.7, 68.5%, 71%)
CMYK0%, 42.5%, 68.5%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,888,697
CSS custom property--colour: #B56839;
Brightness & contrast
Relative luminance0.2002WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5:1
Contrast with white4.2:1WCAG normal text: Fail
Contrast with black5:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#4A97C6
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.2:1WCAG large text: AA
Contrast with black, large text5:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3986B5
Analogous#B53948, #B5A639
Triadic#39B568, #6839B5
Split complementary#39B5A6, #3948B5
Tetradic#48B539, #3986B5, #A639B5
Tints, shades & saturation
Channel breakdown
R181
G104
B57
Red181 (71%)
Green104 (40.8%)
Blue57 (22.4%)
Hue22.74°
Saturation (HSL)52.1%
Lightness46.67%
Dominant channelRed
Hex per channelR B5 · G 68 · B 39
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Also reads as
B56839 (chemical formula)
- Formula
- 614,429.59 g/mol
- 56839 atoms
B56839 has a molar mass of 614,429.59 g/mol, made up of 56839 atoms across 1 element: 56839 × B.
Molar mass
Molar mass614,429.59 g/mol
Total atoms per molecule56839
Distinct elements1
Mass of one molecule1.0202843 × 10^-18 g
Molecules per gram9.8011894 × 10^17
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 × 56839)614,429.59 g/mol, 100%
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