Recognised as Colour
#FF1F5C
- #FF1F5C
- Red
- Dark
- Nearest: Crimson
#FF1F5C is a red with RGB values 255, 31, 92 and HSL 344°, 100%, 56%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#FF1F5C#FF1F5C
HEX#FF1F5C
RGBrgb(255, 31, 92)
RGB (0–1)1, 0.1216, 0.3608
RGB percentages100%, 12.2%, 36.1%
HSLhsl(343.7, 100%, 56.1%)
HSV / HSBhsv(343.7, 87.8%, 100%)
CMYK0%, 87.8%, 63.9%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,719,708
CSS custom property--colour: #FF1F5C;
Brightness & contrast
Relative luminance0.23013WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.6:1
Contrast with white3.75:1WCAG normal text: Fail
Contrast with black5.6:1WCAG normal text: AA
Greyscale equivalent#535353
Inverted#00E0A3
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.75:1WCAG large text: AA
Contrast with black, large text5.6:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1FFFC2
Analogous#FF1FCC, #FF521F
Triadic#5CFF1F, #1F5CFF
Split complementary#1FFF52, #1FCCFF
Tetradic#CCFF1F, #1FFFC2, #521FFF
Tints, shades & saturation
Channel breakdown
R255
G31
B92
Red255 (100%)
Green31 (12.2%)
Blue92 (36.1%)
Hue343.66°
Saturation (HSL)100%
Lightness56.08%
Dominant channelRed
Hex per channelR FF · G 1F · B 5C
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Also reads as
FF1F5C (chemical formula)
- Formula
- 144.997 g/mol
- 8 atoms
FF1F5C has a molar mass of 144.997 g/mol, made up of 8 atoms across 2 elements: 7 × F, 1 × C.
Molar mass
Molar mass144.997 g/mol
Total atoms per molecule8
Distinct elements2
Mass of one molecule2.4077318 × 10^-22 g
Molecules per gram4.1532865 × 10^21
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
F91.7%
C8.3%
Fluorine (F × 7)132.986 g/mol, 91.716%
Carbon (C)12.011 g/mol, 8.284%
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