Recognised as Colour
#F30247
- #F30247
- Red
- Dark
- Nearest: Crimson
#F30247 is a red with RGB values 243, 2, 71 and HSL 343°, 98%, 48%. 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
#F30247#F30247
HEX#F30247
RGBrgb(243, 2, 71)
RGB (0–1)0.9529, 0.0078, 0.2784
RGB percentages95.3%, 0.8%, 27.8%
HSLhsl(342.8, 98.4%, 48%)
HSV / HSBhsv(342.8, 99.2%, 95.3%)
CMYK0%, 99.2%, 70.8%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,925,831
CSS custom property--colour: #F30247;
Brightness & contrast
Relative luminance0.19553WCAG 2.x, 0 is black and 1 is white
Perceived brightness135 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.91:1
Contrast with white4.28:1WCAG normal text: Fail
Contrast with black4.91:1WCAG normal text: AA
Greyscale equivalent#3A3A3A
Inverted#0CFDB8
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.28:1WCAG large text: AA
Contrast with black, large text4.91:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#02F3AE
Analogous#F302BF, #F33602
Triadic#47F302, #0247F3
Split complementary#02F336, #02BFF3
Tetradic#BFF302, #02F3AE, #3602F3
Tints, shades & saturation
Channel breakdown
R243
G2
B71
Red243 (95.3%)
Green2 (0.8%)
Blue71 (27.8%)
Hue342.82°
Saturation (HSL)98.37%
Lightness48.04%
Dominant channelRed
Hex per channelR F3 · G 02 · B 47
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Also reads as
F30247 (chemical formula)
- Formula
- 574,632.506 g/mol
- 30247 atoms
F30247 has a molar mass of 574,632.506 g/mol, made up of 30247 atoms across 1 element: 30247 × F.
Molar mass
Molar mass574,632.506 g/mol
Total atoms per molecule30247
Distinct elements1
Mass of one molecule9.5419973 × 10^-19 g
Molecules per gram1.0479986 × 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 × 30247)574,632.506 g/mol, 100%
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