Recognised as Colour
#FF1F67
- #FF1F67
- Red
- Dark
- Nearest: Crimson
#FF1F67 is a red with RGB values 255, 31, 103 and HSL 341°, 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
#FF1F67#FF1F67
HEX#FF1F67
RGBrgb(255, 31, 103)
RGB (0–1)1, 0.1216, 0.4039
RGB percentages100%, 12.2%, 40.4%
HSLhsl(340.7, 100%, 56.1%)
HSV / HSBhsv(340.7, 87.8%, 100%)
CMYK0%, 87.8%, 59.6%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,719,719
CSS custom property--colour: #FF1F67;
Brightness & contrast
Relative luminance0.23219WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.64:1
Contrast with white3.72:1WCAG normal text: Fail
Contrast with black5.64:1WCAG normal text: AA
Greyscale equivalent#545454
Inverted#00E098
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.72:1WCAG large text: AA
Contrast with black, large text5.64:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1FFFB7
Analogous#FF1FD7, #FF471F
Triadic#67FF1F, #1F67FF
Split complementary#1FFF47, #1FD7FF
Tetradic#D7FF1F, #1FFFB7, #471FFF
Tints, shades & saturation
Channel breakdown
R255
G31
B103
Red255 (100%)
Green31 (12.2%)
Blue103 (40.4%)
Hue340.71°
Saturation (HSL)100%
Lightness56.08%
Dominant channelRed
Hex per channelR FF · G 1F · B 67
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Also reads as
FF1F67 (chemical formula)
- Formula
- 1,310.862 g/mol
- 69 atoms
FF1F67 has a molar mass of 1,310.862 g/mol, made up of 69 atoms across 1 element: 69 × F.
Molar mass
Molar mass1,310.862 g/mol
Total atoms per molecule69
Distinct elements1
Mass of one molecule2.1767376 × 10^-21 g
Molecules per gram4.5940311 × 10^20
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 × 69)1,310.862 g/mol, 100%
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