Recognised as Colour
#AC3428
- #AC3428
- Red
- Dark
- Nearest: Brown
#AC3428 is a red with RGB values 172, 52, 40 and HSL 5°, 62%, 42%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Brown.
Colour values
#AC3428#AC3428
HEX#AC3428
RGBrgb(172, 52, 40)
RGB (0–1)0.6745, 0.2039, 0.1569
RGB percentages67.5%, 20.4%, 15.7%
HSLhsl(5.5, 62.3%, 41.6%)
HSV / HSBhsv(5.5, 76.7%, 67.5%)
CMYK0%, 69.8%, 76.7%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,285,544
CSS custom property--colour: #AC3428;
Brightness & contrast
Relative luminance0.1138WCAG 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 6.41:1
Contrast with white6.41:1WCAG normal text: AA
Contrast with black3.28:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#53CBD7
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 text3.28:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#28A0AC
Analogous#AC285E, #AC7628
Triadic#28AC34, #3428AC
Split complementary#28AC76, #285EAC
Tetradic#5EAC28, #28A0AC, #7628AC
Tints, shades & saturation
Channel breakdown
R172
G52
B40
Red172 (67.5%)
Green52 (20.4%)
Blue40 (15.7%)
Hue5.45°
Saturation (HSL)62.26%
Lightness41.57%
Dominant channelRed
Hex per channelR AC · G 34 · B 28
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Also reads as
Ac3428 (chemical formula)
- Formula
- 778,156 g/mol
- 3428 atoms
Ac3428 has a molar mass of 778,156 g/mol, made up of 3428 atoms across 1 element: 3428 × Ac.
Molar mass
Molar mass778,156 g/mol
Total atoms per molecule3428
Distinct elements1
Mass of one molecule1.2921584 × 10^-18 g
Molecules per gram7.738989 × 10^17
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
Ac100%
Actinium (Ac × 3428)778,156 g/mol, 100%
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