Recognised as Colour
#BCB500
- #BCB500
- Yellow
- Dark
- Nearest: Goldenrod
#BCB500 is a yellow with RGB values 188, 181, 0 and HSL 58°, 100%, 37%. It is a dark colour, so black text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Goldenrod.
Colour values
#BCB500#BCB500
HEX#BCB500
RGBrgb(188, 181, 0)
RGB (0–1)0.7373, 0.7098, 0
RGB percentages73.7%, 71%, 0%
HSLhsl(57.8, 100%, 36.9%)
HSV / HSBhsv(57.8, 100%, 73.7%)
CMYK0%, 3.7%, 100%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,367,104
CSS custom property--colour: #BCB500;
Brightness & contrast
Relative luminance0.43739WCAG 2.x, 0 is black and 1 is white
Perceived brightness172.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.75:1
Contrast with white2.15:1WCAG normal text: Fail
Contrast with black9.75:1WCAG normal text: AAA
Greyscale equivalent#A9A9A9
Inverted#434AFF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.15:1WCAG large text: Fail
Contrast with black, large text9.75:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0007BC
Analogous#BC5700, #65BC00
Triadic#00BCB5, #B500BC
Split complementary#0065BC, #5700BC
Tetradic#00BC57, #0007BC, #BC0065
Tints, shades & saturation
Channel breakdown
R188
G181
B0
Red188 (73.7%)
Green181 (71%)
Blue0 (0%)
Hue57.77°
Saturation (HSL)100%
Lightness36.86%
Dominant channelRed
Hex per channelR BC · G B5 · B 00
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Also reads as
BCB500 (chemical formula)
- Formula
- 5,427.821 g/mol
- 502 atoms
BCB500 has a molar mass of 5,427.821 g/mol, made up of 502 atoms across 2 elements: 501 × B, 1 × C.
Molar mass
Molar mass5,427.821 g/mol
Total atoms per molecule502
Distinct elements2
Mass of one molecule9.0131088 × 10^-21 g
Molecules per gram1.1094951 × 10^20
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
B99.8%
C0.2%
Boron (B × 501)5,415.81 g/mol, 99.779%
Carbon (C)12.011 g/mol, 0.221%
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