Recognised as Colour
#B3471F
- #B3471F
- Orange
- Dark
- Nearest: Sienna
#B3471F is a orange with RGB values 179, 71, 31 and HSL 16°, 70%, 41%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Sienna.
Colour values
#B3471F#B3471F
HEX#B3471F
RGBrgb(179, 71, 31)
RGB (0–1)0.702, 0.2784, 0.1216
RGB percentages70.2%, 27.8%, 12.2%
HSLhsl(16.2, 70.5%, 41.2%)
HSV / HSBhsv(16.2, 82.7%, 70.2%)
CMYK0%, 60.3%, 82.7%, 29.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,749,151
CSS custom property--colour: #B3471F;
Brightness & contrast
Relative luminance0.14189WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.47:1
Contrast with white5.47:1WCAG normal text: AA
Contrast with black3.84:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#4CB8E0
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.47:1WCAG large text: AAA
Contrast with black, large text3.84:1WCAG large text: AA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1F8BB3
Analogous#B31F41, #B3911F
Triadic#1FB347, #471FB3
Split complementary#1FB391, #1F41B3
Tetradic#41B31F, #1F8BB3, #911FB3
Tints, shades & saturation
Channel breakdown
R179
G71
B31
Red179 (70.2%)
Green71 (27.8%)
Blue31 (12.2%)
Hue16.22°
Saturation (HSL)70.48%
Lightness41.18%
Dominant channelRed
Hex per channelR B3 · G 47 · B 1F
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Also reads as
B3471F (chemical formula)
- Formula
- 37,540.508 g/mol
- 3472 atoms
B3471F has a molar mass of 37,540.508 g/mol, made up of 3472 atoms across 2 elements: 3471 × B, 1 × F.
Molar mass
Molar mass37,540.508 g/mol
Total atoms per molecule3472
Distinct elements2
Mass of one molecule6.233748 × 10^-20 g
Molecules per gram1.6041714 × 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
B99.9%
F0.1%
Boron (B × 3471)37,521.51 g/mol, 99.949%
Fluorine (F)18.998 g/mol, 0.051%
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