Recognised as Colour
#F51943
- #F51943
- Red
- Dark
- Nearest: Crimson
#F51943 is a red with RGB values 245, 25, 67 and HSL 349°, 92%, 53%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#F51943#F51943
HEX#F51943
RGBrgb(245, 25, 67)
RGB (0–1)0.9608, 0.098, 0.2627
RGB percentages96.1%, 9.8%, 26.3%
HSLhsl(348.5, 91.7%, 52.9%)
HSV / HSBhsv(348.5, 89.8%, 96.1%)
CMYK0%, 89.8%, 72.7%, 3.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,062,787
CSS custom property--colour: #F51943;
Brightness & contrast
Relative luminance0.20513WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.1:1
Contrast with white4.12:1WCAG normal text: Fail
Contrast with black5.1:1WCAG normal text: AA
Greyscale equivalent#4B4B4B
Inverted#0AE6BC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.12:1WCAG large text: AA
Contrast with black, large text5.1:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#19F5CB
Analogous#F519B1, #F55D19
Triadic#43F519, #1943F5
Split complementary#19F55D, #19B1F5
Tetradic#B1F519, #19F5CB, #5D19F5
Tints, shades & saturation
Channel breakdown
R245
G25
B67
Red245 (96.1%)
Green25 (9.8%)
Blue67 (26.3%)
Hue348.55°
Saturation (HSL)91.67%
Lightness52.94%
Dominant channelRed
Hex per channelR F5 · G 19 · B 43
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Also reads as
F51943 (chemical formula)
- Formula
- 986,813.114 g/mol
- 51943 atoms
F51943 has a molar mass of 986,813.114 g/mol, made up of 51943 atoms across 1 element: 51943 × F.
Molar mass
Molar mass986,813.114 g/mol
Total atoms per molecule51943
Distinct elements1
Mass of one molecule1.6386417 × 10^-18 g
Molecules per gram6.1026153 × 10^17
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 × 51943)986,813.114 g/mol, 100%
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