Recognised as Colour
#F20740
- #F20740
- Red
- Dark
- Nearest: Crimson
#F20740 is a red with RGB values 242, 7, 64 and HSL 345°, 94%, 49%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F20740#F20740
HEX#F20740
RGBrgb(242, 7, 64)
RGB (0–1)0.949, 0.0275, 0.251
RGB percentages94.9%, 2.7%, 25.1%
HSLhsl(345.4, 94.4%, 48.8%)
HSV / HSBhsv(345.4, 97.1%, 94.9%)
CMYK0%, 97.1%, 73.6%, 5.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,861,568
CSS custom property--colour: #F20740;
Brightness & contrast
Relative luminance0.19399WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.3:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#3D3D3D
Inverted#0DF8BF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.3:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#07F2B9
Analogous#F207B6, #F24307
Triadic#40F207, #0740F2
Split complementary#07F243, #07B6F2
Tetradic#B6F207, #07F2B9, #4307F2
Tints, shades & saturation
Channel breakdown
R242
G7
B64
Red242 (94.9%)
Green7 (2.7%)
Blue64 (25.1%)
Hue345.45°
Saturation (HSL)94.38%
Lightness48.82%
Dominant channelRed
Hex per channelR F2 · G 07 · B 40
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Also reads as
F20740 (chemical formula)
- Formula
- 394,018.52 g/mol
- 20740 atoms
F20740 has a molar mass of 394,018.52 g/mol, made up of 20740 atoms across 1 element: 20740 × F.
Molar mass
Molar mass394,018.52 g/mol
Total atoms per molecule20740
Distinct elements1
Mass of one molecule6.5428315 × 10^-19 g
Molecules per gram1.5283903 × 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 × 20740)394,018.52 g/mol, 100%
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