Recognised as Colour
#BFB257
- #BFB257
- Yellow
- Dark
- Nearest: Dark khaki
#BFB257 is a yellow with RGB values 191, 178, 87 and HSL 52°, 45%, 55%. It is a dark colour, so black text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark khaki.
Colour values
#BFB257#BFB257
HEX#BFB257
RGBrgb(191, 178, 87)
RGB (0–1)0.749, 0.698, 0.3412
RGB percentages74.9%, 69.8%, 34.1%
HSLhsl(52.5, 44.8%, 54.5%)
HSV / HSBhsv(52.5, 54.5%, 74.9%)
CMYK0%, 6.8%, 54.5%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,563,031
CSS custom property--colour: #BFB257;
Brightness & contrast
Relative luminance0.43605WCAG 2.x, 0 is black and 1 is white
Perceived brightness174.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.72:1
Contrast with white2.16:1WCAG normal text: Fail
Contrast with black9.72:1WCAG normal text: AAA
Greyscale equivalent#AEAEAE
Inverted#404DA8
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.16:1WCAG large text: Fail
Contrast with black, large text9.72:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#5764BF
Analogous#BF7E57, #98BF57
Triadic#57BFB2, #B257BF
Split complementary#5798BF, #7E57BF
Tetradic#57BF7E, #5764BF, #BF5798
Tints, shades & saturation
Channel breakdown
R191
G178
B87
Red191 (74.9%)
Green178 (69.8%)
Blue87 (34.1%)
Hue52.5°
Saturation (HSL)44.83%
Lightness54.51%
Dominant channelRed
Hex per channelR BF · G B2 · B 57
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
BFB257 (chemical formula)
- Formula
- 2,807.978 g/mol
- 259 atoms
BFB257 has a molar mass of 2,807.978 g/mol, made up of 259 atoms across 2 elements: 258 × B, 1 × F.
Molar mass
Molar mass2,807.978 g/mol
Total atoms per molecule259
Distinct elements2
Mass of one molecule4.6627572 × 10^-21 g
Molecules per gram2.1446538 × 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
B99.3%
F0.7%
Boron (B × 258)2,788.98 g/mol, 99.323%
Fluorine (F)18.998 g/mol, 0.677%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page