Recognised as Colour
#AC15B4
- #AC15B4
- Magenta
- Dark
- Nearest: Dark orchid
#AC15B4 is a magenta with RGB values 172, 21, 180 and HSL 297°, 79%, 39%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Dark orchid.
Colour values
#AC15B4#AC15B4
HEX#AC15B4
RGBrgb(172, 21, 180)
RGB (0–1)0.6745, 0.0824, 0.7059
RGB percentages67.5%, 8.2%, 70.6%
HSLhsl(297, 79.1%, 39.4%)
HSV / HSBhsv(297, 88.3%, 70.6%)
CMYK4.4%, 88.3%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,277,748
CSS custom property--colour: #AC15B4;
Brightness & contrast
Relative luminance0.12602WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.97:1
Contrast with white5.97:1WCAG normal text: AA
Contrast with black3.52:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#53EA4B
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.97:1WCAG large text: AAA
Contrast with black, large text3.52:1WCAG large text: AA
Named colours
Hue familymagenta
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#1DB415
Analogous#5D15B4, #B4156D
Triadic#B4AC15, #15B4AC
Split complementary#6DB415, #15B45D
Tetradic#B45D15, #1DB415, #156DB4
Tints, shades & saturation
Channel breakdown
R172
G21
B180
Red172 (67.5%)
Green21 (8.2%)
Blue180 (70.6%)
Hue296.98°
Saturation (HSL)79.1%
Lightness39.41%
Dominant channelBlue
Hex per channelR AC · G 15 · B B4
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Harmonies
Similar named colours
Also reads as
Ac15B4 (chemical formula)
- Formula
- 3,448.24 g/mol
- 19 atoms
Ac15B4 has a molar mass of 3,448.24 g/mol, made up of 19 atoms across 2 elements: 15 × Ac, 4 × B.
Molar mass
Molar mass3,448.24 g/mol
Total atoms per molecule19
Distinct elements2
Mass of one molecule5.7259372 × 10^-21 g
Molecules per gram1.746439 × 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
Ac98.7%
B1.3%
Actinium (Ac × 15)3,405 g/mol, 98.746%
Boron (B × 4)43.24 g/mol, 1.254%
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