Recognised as Colour
#AC2F4F
- #AC2F4F
- Red
- Dark
- Nearest: Indian red
#AC2F4F is a red with RGB values 172, 47, 79 and HSL 345°, 57%, 43%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Indian red.
Colour values
#AC2F4F#AC2F4F
HEX#AC2F4F
RGBrgb(172, 47, 79)
RGB (0–1)0.6745, 0.1843, 0.3098
RGB percentages67.5%, 18.4%, 31%
HSLhsl(344.6, 57.1%, 42.9%)
HSV / HSBhsv(344.6, 72.7%, 67.5%)
CMYK0%, 72.7%, 54.1%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,284,303
CSS custom property--colour: #AC2F4F;
Brightness & contrast
Relative luminance0.11368WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.41:1
Contrast with white6.41:1WCAG normal text: AA
Contrast with black3.27:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#53D0B0
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.41:1WCAG large text: AAA
Contrast with black, large text3.27:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2FAC8C
Analogous#AC2F8E, #AC4D2F
Triadic#4FAC2F, #2F4FAC
Split complementary#2FAC4D, #2F8EAC
Tetradic#8EAC2F, #2FAC8C, #4D2FAC
Tints, shades & saturation
Channel breakdown
R172
G47
B79
Red172 (67.5%)
Green47 (18.4%)
Blue79 (31%)
Hue344.64°
Saturation (HSL)57.08%
Lightness42.94%
Dominant channelRed
Hex per channelR AC · G 2F · B 4F
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Harmonies
Similar named colours
Also reads as
Ac2F4F (chemical formula)
- Formula
- 548.99 g/mol
- 7 atoms
Ac2F4F has a molar mass of 548.99 g/mol, made up of 7 atoms across 2 elements: 2 × Ac, 5 × F.
Molar mass
Molar mass548.99 g/mol
Total atoms per molecule7
Distinct elements2
Mass of one molecule9.1161934 × 10^-22 g
Molecules per gram1.0969491 × 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
Ac82.7%
F17.3%
Actinium (Ac × 2)454 g/mol, 82.697%
Fluorine (F × 5)94.99 g/mol, 17.303%
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