Recognised as Colour

#B545CE

#B545CE
Violet
Dark
Nearest: Medium orchid

#B545CE is a violet with RGB values 181, 69, 206 and HSL 289°, 58%, 54%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Medium orchid.

Colour values

#B545CE#B545CE

HEX#B545CE

RGBrgb(181, 69, 206)

RGB (0–1)0.7098, 0.2706, 0.8078

RGB percentages71%, 27.1%, 80.8%

HSLhsl(289.1, 58.3%, 53.9%)

HSV / HSBhsv(289.1, 66.5%, 80.8%)

CMYK12.1%, 66.5%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,879,886

CSS custom property--colour: #B545CE;

Brightness & contrast

Relative luminance0.18536WCAG 2.x, 0 is black and 1 is white

Perceived brightness132 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.71:1

Contrast with white4.46:1WCAG normal text: Fail

Contrast with black4.71:1WCAG normal text: AA

Greyscale equivalent#676767

Inverted#4ABA31

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1370D2no red cones; affects about 1% of men; ΔE 52.6 from the original

Deuteranopia#507BCBno green cones; the most common form, about 1% of men; ΔE 54.3 from the original

Tritanopia#B65D84no blue cones; rare, and affects men and women equally; ΔE 50.7 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text4.46:1WCAG large text: AA

Contrast with black, large text4.71:1WCAG large text: AAA

Named colours

Medium orchid · ΔE 6.6 Dark orchid · ΔE 12.1 Dark magenta · ΔE 21 Orchid · ΔE 22 Violet · ΔE 24.9 Purple · ΔE 25

Nearest named CSS colourMedium orchid (#BA55D3)ΔE 6.59, clearly different but related

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#5ECE45

Analogous#7045CE, #CE45A3

Triadic#CEB545, #45CEB5

Split complementary#A2CE45, #45CE71

Tetradic#CE7145, #5ECE45, #45A2CE

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F5E6F9

Lighter +30%#E5BEEE

Lighter +20%#D596E3

Lighter +10%#C56DD9

Darker −10%#992FB1

Darker −20%#772489

Darker −30%#541961

Darker −40%#310F38

More saturated +25%#C828EB

Less saturated −25%#A262B1

Channel breakdown

R181

G69

B206

Red181 (71%)

Green69 (27.1%)

Blue206 (80.8%)

Hue289.05°

Saturation (HSL)58.3%

Lightness53.92%

Dominant channelBlue

Hex per channelR B5 · G 45 · B CE

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B545Ce (chemical formula)

Formula
6,031.57 g/mol
546 atoms

B545Ce has a molar mass of 6,031.57 g/mol, made up of 546 atoms across 2 elements: 545 × B, 1 × Ce.

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Molar mass

Molar mass6,031.57 g/mol

Total atoms per molecule546

Distinct elements2

Mass of one molecule1.0015658 × 10^-20 g

Molecules per gram9.9843669 × 10^19

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

B97.7%

Ce2.3%

Boron (B × 545)5,891.45 g/mol, 97.677%

Cerium (Ce)140.12 g/mol, 2.323%

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Elements in this formula

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