Recognised as Colour
#ACB5BB
- #ACB5BB
- Blue
- Dark
- Nearest: Dark grey
#ACB5BB is a blue with RGB values 172, 181, 187 and HSL 204°, 10%, 70%. It is a dark colour, so black text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark grey.
Colour values
#ACB5BB#ACB5BB
HEX#ACB5BB
RGBrgb(172, 181, 187)
RGB (0–1)0.6745, 0.7098, 0.7333
RGB percentages67.5%, 71%, 73.3%
HSLhsl(204, 9.9%, 70.4%)
HSV / HSBhsv(204, 8%, 73.3%)
CMYK8%, 3.2%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,318,715
CSS custom property--colour: #ACB5BB;
Brightness & contrast
Relative luminance0.45406WCAG 2.x, 0 is black and 1 is white
Perceived brightness179.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.08:1
Contrast with white2.08:1WCAG normal text: Fail
Contrast with black10.08:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#534A44
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.08:1WCAG large text: Fail
Contrast with black, large text10.08:1WCAG large text: AAA
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#BBB2AC
Analogous#ACBBBA, #ACAEBB
Triadic#BBACB5, #B5BBAC
Split complementary#BBACAE, #BBBAAC
Tetradic#BAACBB, #BBB2AC, #AEBBAC
Tints, shades & saturation
Channel breakdown
R172
G181
B187
Red172 (67.5%)
Green181 (71%)
Blue187 (73.3%)
Hue204°
Saturation (HSL)9.93%
Lightness70.39%
Dominant channelBlue
Hex per channelR AC · G B5 · B BB
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Harmonies
Similar named colours
Also reads as
AcB5BB (chemical formula)
- Formula
- 302.67 g/mol
- 8 atoms
AcB5BB has a molar mass of 302.67 g/mol, made up of 8 atoms across 2 elements: 1 × Ac, 7 × B.
Molar mass
Molar mass302.67 g/mol
Total atoms per molecule8
Distinct elements2
Mass of one molecule5.0259536 × 10^-22 g
Molecules per gram1.9896722 × 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
Ac75%
B25%
Actinium (Ac)227 g/mol, 74.999%
Boron (B × 7)75.67 g/mol, 25.001%
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