Recognised as Colour
#AC2F40
- #AC2F40
- Red
- Dark
- Nearest: Brown
#AC2F40 is a red with RGB values 172, 47, 64 and HSL 352°, 57%, 43%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Brown.
Colour values
#AC2F40#AC2F40
HEX#AC2F40
RGBrgb(172, 47, 64)
RGB (0–1)0.6745, 0.1843, 0.251
RGB percentages67.5%, 18.4%, 25.1%
HSLhsl(351.8, 57.1%, 42.9%)
HSV / HSBhsv(351.8, 72.7%, 67.5%)
CMYK0%, 72.7%, 62.8%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,284,288
CSS custom property--colour: #AC2F40;
Brightness & contrast
Relative luminance0.11174WCAG 2.x, 0 is black and 1 is white
Perceived brightness103 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.49:1
Contrast with white6.49:1WCAG normal text: AA
Contrast with black3.23:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#53D0BF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.49:1WCAG large text: AAA
Contrast with black, large text3.23:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2FAC9B
Analogous#AC2F7E, #AC5D2F
Triadic#40AC2F, #2F40AC
Split complementary#2FAC5D, #2F7EAC
Tetradic#7EAC2F, #2FAC9B, #5D2FAC
Tints, shades & saturation
Channel breakdown
R172
G47
B64
Red172 (67.5%)
Green47 (18.4%)
Blue64 (25.1%)
Hue351.84°
Saturation (HSL)57.08%
Lightness42.94%
Dominant channelRed
Hex per channelR AC · G 2F · B 40
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Also reads as
Ac2F40 (chemical formula)
- Formula
- 1,213.92 g/mol
- 42 atoms
Ac2F40 has a molar mass of 1,213.92 g/mol, made up of 42 atoms across 2 elements: 2 × Ac, 40 × F.
Molar mass
Molar mass1,213.92 g/mol
Total atoms per molecule42
Distinct elements2
Mass of one molecule2.0157616 × 10^-21 g
Molecules per gram4.9609041 × 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
Ac37.4%
F62.6%
Actinium (Ac × 2)454 g/mol, 37.399%
Fluorine (F × 40)759.92 g/mol, 62.601%
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