Recognised as Colour
#FEF800
- #FEF800
- Yellow
- Light
- Nearest: Yellow
#FEF800 is a yellow with RGB values 254, 248, 0 and HSL 59°, 100%, 50%. It is a light colour, so black text on it reaches 18.6:1 contrast (AAA for normal text). The nearest named colour is Yellow.
Colour values
#FEF800#FEF800
HEX#FEF800
RGBrgb(254, 248, 0)
RGB (0–1)0.9961, 0.9725, 0
RGB percentages99.6%, 97.3%, 0%
HSLhsl(58.6, 100%, 49.8%)
HSV / HSBhsv(58.6, 100%, 99.6%)
CMYK0%, 2.4%, 100%, 0.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,709,632
CSS custom property--colour: #FEF800;
Brightness & contrast
Relative luminance0.88206WCAG 2.x, 0 is black and 1 is white
Perceived brightness235.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 18.64:1
Contrast with white1.13:1WCAG normal text: Fail
Contrast with black18.64:1WCAG normal text: AAA
Greyscale equivalent#E7E7E7
Inverted#0107FF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.13:1WCAG large text: Fail
Contrast with black, large text18.64:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0006FE
Analogous#FE7900, #85FE00
Triadic#00FEF8, #F800FE
Split complementary#0085FE, #7900FE
Tetradic#00FE79, #0006FE, #FE0085
Tints, shades & saturation
Channel breakdown
R254
G248
B0
Red254 (99.6%)
Green248 (97.3%)
Blue0 (0%)
Hue58.58°
Saturation (HSL)100%
Lightness49.8%
Dominant channelRed
Hex per channelR FE · G F8 · B 00
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Harmonies
Similar named colours
Also reads as
FeF800 (chemical formula)
- Formula
- 15,254.245 g/mol
- 801 atoms
FeF800 has a molar mass of 15,254.245 g/mol, made up of 801 atoms across 2 elements: 1 × Fe, 800 × F.
Molar mass
Molar mass15,254.245 g/mol
Total atoms per molecule801
Distinct elements2
Mass of one molecule2.533027 × 10^-20 g
Molecules per gram3.9478458 × 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
Fe0.4%
F99.6%
Iron (Fe)55.845 g/mol, 0.366%
Fluorine (F × 800)15,198.4 g/mol, 99.634%
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