Recognised as Colour
#B1BF39
- #B1BF39
- Yellow
- Dark
- Nearest: Yellow green
#B1BF39 is a yellow with RGB values 177, 191, 57 and HSL 66°, 54%, 49%. It is a dark colour, so black text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Yellow green.
Colour values
#B1BF39#B1BF39
HEX#B1BF39
RGBrgb(177, 191, 57)
RGB (0–1)0.6941, 0.749, 0.2235
RGB percentages69.4%, 74.9%, 22.4%
HSLhsl(66.3, 54%, 48.6%)
HSV / HSBhsv(66.3, 70.2%, 74.9%)
CMYK7.3%, 0%, 70.2%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,648,825
CSS custom property--colour: #B1BF39;
Brightness & contrast
Relative luminance0.46904WCAG 2.x, 0 is black and 1 is white
Perceived brightness176.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.38:1
Contrast with white2.02:1WCAG normal text: Fail
Contrast with black10.38:1WCAG normal text: AAA
Greyscale equivalent#B2B2B2
Inverted#4E40C6
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.02:1WCAG large text: Fail
Contrast with black, large text10.38:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#4739BF
Analogous#BF8A39, #6EBF39
Triadic#39B1BF, #BF39B1
Split complementary#396EBF, #8A39BF
Tetradic#39BF8A, #4739BF, #BF396E
Tints, shades & saturation
Channel breakdown
R177
G191
B57
Red177 (69.4%)
Green191 (74.9%)
Blue57 (22.4%)
Hue66.27°
Saturation (HSL)54.03%
Lightness48.63%
Dominant channelGreen
Hex per channelR B1 · G BF · B 39
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Harmonies
Similar named colours
Also reads as
B1BF39 (chemical formula)
- Formula
- 762.542 g/mol
- 41 atoms
B1BF39 has a molar mass of 762.542 g/mol, made up of 41 atoms across 2 elements: 2 × B, 39 × F.
Molar mass
Molar mass762.542 g/mol
Total atoms per molecule41
Distinct elements2
Mass of one molecule1.2662308 × 10^-21 g
Molecules per gram7.8974545 × 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
B2.8%
F97.2%
Boron (B × 2)21.62 g/mol, 2.835%
Fluorine (F × 39)740.922 g/mol, 97.165%
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