Recognised as Colour
#FF1981
- #FF1981
- Red
- Dark
- Nearest: Deep pink
#FF1981 is a red with RGB values 255, 25, 129 and HSL 333°, 100%, 55%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Deep pink.
Colour values
#FF1981#FF1981
HEX#FF1981
RGBrgb(255, 25, 129)
RGB (0–1)1, 0.098, 0.5059
RGB percentages100%, 9.8%, 50.6%
HSLhsl(332.9, 100%, 54.9%)
HSV / HSBhsv(332.9, 90.2%, 100%)
CMYK0%, 90.2%, 49.4%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,718,209
CSS custom property--colour: #FF1981;
Brightness & contrast
Relative luminance0.2354WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.71:1
Contrast with white3.68:1WCAG normal text: Fail
Contrast with black5.71:1WCAG normal text: AA
Greyscale equivalent#515151
Inverted#00E67E
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.68:1WCAG large text: AA
Contrast with black, large text5.71:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#19FF97
Analogous#FF19F4, #FF2419
Triadic#81FF19, #1981FF
Split complementary#19FF24, #19F4FF
Tetradic#F4FF19, #19FF97, #2419FF
Tints, shades & saturation
Channel breakdown
R255
G25
B129
Red255 (100%)
Green25 (9.8%)
Blue129 (50.6%)
Hue332.87°
Saturation (HSL)100%
Lightness54.9%
Dominant channelRed
Hex per channelR FF · G 19 · B 81
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Also reads as
FF1981 (chemical formula)
- Formula
- 37,654.036 g/mol
- 1982 atoms
FF1981 has a molar mass of 37,654.036 g/mol, made up of 1982 atoms across 1 element: 1982 × F.
Molar mass
Molar mass37,654.036 g/mol
Total atoms per molecule1982
Distinct elements1
Mass of one molecule6.2525998 × 10^-20 g
Molecules per gram1.5993347 × 10^19
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 × 1982)37,654.036 g/mol, 100%
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