Recognised as Colour
#BC3921
- #BC3921
- Red
- Dark
- Nearest: Firebrick
#BC3921 is a red with RGB values 188, 57, 33 and HSL 9°, 70%, 43%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#BC3921#BC3921
HEX#BC3921
RGBrgb(188, 57, 33)
RGB (0–1)0.7373, 0.2235, 0.1294
RGB percentages73.7%, 22.4%, 12.9%
HSLhsl(9.3, 70.1%, 43.3%)
HSV / HSBhsv(9.3, 82.4%, 73.7%)
CMYK0%, 69.7%, 82.4%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,335,393
CSS custom property--colour: #BC3921;
Brightness & contrast
Relative luminance0.13727WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.61:1
Contrast with white5.61:1WCAG normal text: AA
Contrast with black3.75:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#43C6DE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.61:1WCAG large text: AAA
Contrast with black, large text3.75:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#21A4BC
Analogous#BC2156, #BC8721
Triadic#21BC39, #3921BC
Split complementary#21BC86, #2157BC
Tetradic#57BC21, #21A4BC, #8621BC
Tints, shades & saturation
Channel breakdown
R188
G57
B33
Red188 (73.7%)
Green57 (22.4%)
Blue33 (12.9%)
Hue9.29°
Saturation (HSL)70.14%
Lightness43.33%
Dominant channelRed
Hex per channelR BC · G 39 · B 21
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Also reads as
BC3921 (chemical formula)
- Formula
- 47,105.941 g/mol
- 3922 atoms
BC3921 has a molar mass of 47,105.941 g/mol, made up of 3922 atoms across 2 elements: 1 × B, 3921 × C.
Molar mass
Molar mass47,105.941 g/mol
Total atoms per molecule3922
Distinct elements2
Mass of one molecule7.8221255 × 10^-20 g
Molecules per gram1.2784249 × 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
B0%
C100%
Boron (B)10.81 g/mol, 0.023%
Carbon (C × 3921)47,095.131 g/mol, 99.977%
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