Recognised as Colour
#BFBF40
- #BFBF40
- Yellow
- Dark
- Nearest: Dark khaki
#BFBF40 is a yellow with RGB values 191, 191, 64 and HSL 60°, 50%, 50%. It is a dark colour, so black text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark khaki.
Colour values
#BFBF40#BFBF40
HEX#BFBF40
RGBrgb(191, 191, 64)
RGB (0–1)0.749, 0.749, 0.251
RGB percentages74.9%, 74.9%, 25.1%
HSLhsl(60, 49.8%, 50%)
HSV / HSBhsv(60, 66.5%, 74.9%)
CMYK0%, 0%, 66.5%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,566,336
CSS custom property--colour: #BFBF40;
Brightness & contrast
Relative luminance0.48708WCAG 2.x, 0 is black and 1 is white
Perceived brightness181.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.74:1
Contrast with white1.96:1WCAG normal text: Fail
Contrast with black10.74:1WCAG normal text: AAA
Greyscale equivalent#B6B6B6
Inverted#4040BF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.96:1WCAG large text: Fail
Contrast with black, large text10.74:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#4040BF
Analogous#BF8040, #80BF40
Triadic#40BFBF, #BF40BF
Split complementary#4080BF, #8040BF
Tetradic#40BF80, #4040BF, #BF4080
Tints, shades & saturation
Channel breakdown
R191
G191
B64
Red191 (74.9%)
Green191 (74.9%)
Blue64 (25.1%)
Hue60°
Saturation (HSL)49.8%
Lightness50%
Dominant channelRed and Green
Hex per channelR BF · G BF · B 40
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Harmonies
Similar named colours
Also reads as
BFBF40 (chemical formula)
- Formula
- 800.538 g/mol
- 43 atoms
BFBF40 has a molar mass of 800.538 g/mol, made up of 43 atoms across 2 elements: 2 × B, 41 × F.
Molar mass
Molar mass800.538 g/mol
Total atoms per molecule43
Distinct elements2
Mass of one molecule1.3293246 × 10^-21 g
Molecules per gram7.522617 × 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
B2.7%
F97.3%
Boron (B × 2)21.62 g/mol, 2.701%
Fluorine (F × 41)778.918 g/mol, 97.299%
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