Recognised as Colour
#FFFE23
- #FFFE23
- Yellow
- Light
- Nearest: Yellow
#FFFE23 is a yellow with RGB values 255, 254, 35 and HSL 60°, 100%, 57%. It is a light colour, so black text on it reaches 19.5:1 contrast (AAA for normal text). The nearest named colour is Yellow.
Colour values
#FFFE23#FFFE23
HEX#FFFE23
RGBrgb(255, 254, 35)
RGB (0–1)1, 0.9961, 0.1373
RGB percentages100%, 99.6%, 13.7%
HSLhsl(59.7, 100%, 56.9%)
HSV / HSBhsv(59.7, 86.3%, 100%)
CMYK0%, 0.4%, 86.3%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,776,739
CSS custom property--colour: #FFFE23;
Brightness & contrast
Relative luminance0.92265WCAG 2.x, 0 is black and 1 is white
Perceived brightness239.7 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 19.45:1
Contrast with white1.08:1WCAG normal text: Fail
Contrast with black19.45:1WCAG normal text: AAA
Greyscale equivalent#EEEEEE
Inverted#0001DC
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.08:1WCAG large text: Fail
Contrast with black, large text19.45:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2324FF
Analogous#FF9023, #92FF23
Triadic#23FFFE, #FE23FF
Split complementary#2392FF, #9023FF
Tetradic#23FF90, #2324FF, #FF2392
Tints, shades & saturation
Channel breakdown
R255
G254
B35
Red255 (100%)
Green254 (99.6%)
Blue35 (13.7%)
Hue59.73°
Saturation (HSL)100%
Lightness56.86%
Dominant channelRed
Hex per channelR FF · G FE · B 23
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Harmonies
Similar named colours
Also reads as
FFFe23 (chemical formula)
- Formula
- 1,322.431 g/mol
- 25 atoms
FFFe23 has a molar mass of 1,322.431 g/mol, made up of 25 atoms across 2 elements: 2 × F, 23 × Fe.
Molar mass
Molar mass1,322.431 g/mol
Total atoms per molecule25
Distinct elements2
Mass of one molecule2.1959483 × 10^-21 g
Molecules per gram4.5538412 × 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
F2.9%
Fe97.1%
Fluorine (F × 2)37.996 g/mol, 2.873%
Iron (Fe × 23)1,284.435 g/mol, 97.127%
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