Recognised as Colour
#B4643C
- #B4643C
- Orange
- Dark
- Nearest: Sienna
#B4643C is a orange with RGB values 180, 100, 60 and HSL 20°, 50%, 47%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Sienna.
Colour values
#B4643C#B4643C
HEX#B4643C
RGBrgb(180, 100, 60)
RGB (0–1)0.7059, 0.3922, 0.2353
RGB percentages70.6%, 39.2%, 23.5%
HSLhsl(20, 50%, 47.1%)
HSV / HSBhsv(20, 66.7%, 70.6%)
CMYK0%, 44.4%, 66.7%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,822,140
CSS custom property--colour: #B4643C;
Brightness & contrast
Relative luminance0.19144WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.83:1
Contrast with white4.35:1WCAG normal text: Fail
Contrast with black4.83:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#4B9BC3
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.35:1WCAG large text: AA
Contrast with black, large text4.83:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3C8CB4
Analogous#B43C50, #B4A03C
Triadic#3CB464, #643CB4
Split complementary#3CB4A0, #3C50B4
Tetradic#50B43C, #3C8CB4, #A03CB4
Tints, shades & saturation
Channel breakdown
R180
G100
B60
Red180 (70.6%)
Green100 (39.2%)
Blue60 (23.5%)
Hue20°
Saturation (HSL)50%
Lightness47.06%
Dominant channelRed
Hex per channelR B4 · G 64 · B 3C
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Harmonies
Similar named colours
Also reads as
B4643C (chemical formula)
- Formula
- 50,202.841 g/mol
- 4644 atoms
B4643C has a molar mass of 50,202.841 g/mol, made up of 4644 atoms across 2 elements: 4643 × B, 1 × C.
Molar mass
Molar mass50,202.841 g/mol
Total atoms per molecule4644
Distinct elements2
Mass of one molecule8.3363779 × 10^-20 g
Molecules per gram1.1995617 × 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%
C0%
Boron (B × 4643)50,190.83 g/mol, 99.976%
Carbon (C)12.011 g/mol, 0.024%
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