Recognised as Colour
#F28909
- #F28909
- Orange
- Dark
- Nearest: Dark orange
#F28909 is a orange with RGB values 242, 137, 9 and HSL 33°, 93%, 49%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark orange.
Colour values
#F28909#F28909
HEX#F28909
RGBrgb(242, 137, 9)
RGB (0–1)0.949, 0.5373, 0.0353
RGB percentages94.9%, 53.7%, 3.5%
HSLhsl(33, 92.8%, 49.2%)
HSV / HSBhsv(33, 96.3%, 94.9%)
CMYK0%, 43.4%, 96.3%, 5.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,894,793
CSS custom property--colour: #F28909;
Brightness & contrast
Relative luminance0.36788WCAG 2.x, 0 is black and 1 is white
Perceived brightness168.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.36:1
Contrast with white2.51:1WCAG normal text: Fail
Contrast with black8.36:1WCAG normal text: AAA
Greyscale equivalent#969696
Inverted#0D76F6
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.51:1WCAG large text: Fail
Contrast with black, large text8.36:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0972F2
Analogous#F21409, #E7F209
Triadic#09F289, #8909F2
Split complementary#09E7F2, #1409F2
Tetradic#09F214, #0972F2, #F209E7
Tints, shades & saturation
Channel breakdown
R242
G137
B9
Red242 (94.9%)
Green137 (53.7%)
Blue9 (3.5%)
Hue32.96°
Saturation (HSL)92.83%
Lightness49.22%
Dominant channelRed
Hex per channelR F2 · G 89 · B 09
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
F28909 (chemical formula)
- Formula
- 549,213.182 g/mol
- 28909 atoms
F28909 has a molar mass of 549,213.182 g/mol, made up of 28909 atoms across 1 element: 28909 × F.
Molar mass
Molar mass549,213.182 g/mol
Total atoms per molecule28909
Distinct elements1
Mass of one molecule9.1198994 × 10^-19 g
Molecules per gram1.0965033 × 10^18
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
F100%
Fluorine (F × 28909)549,213.182 g/mol, 100%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Elements in this formula
Nerdulate something else
Nothing in mind? Surprise me · today’s page