Recognised as Colour

#B151CF

#B151CF
Violet
Dark
Nearest: Medium orchid

#B151CF is a violet with RGB values 177, 81, 207 and HSL 286°, 57%, 56%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Medium orchid.

Colour values

#B151CF#B151CF

HEX#B151CF

RGBrgb(177, 81, 207)

RGB (0–1)0.6941, 0.3176, 0.8118

RGB percentages69.4%, 31.8%, 81.2%

HSLhsl(285.7, 56.8%, 56.5%)

HSV / HSBhsv(285.7, 60.9%, 81.2%)

CMYK14.5%, 60.9%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,620,815

CSS custom property--colour: #B151CF;

Brightness & contrast

Relative luminance0.19737WCAG 2.x, 0 is black and 1 is white

Perceived brightness134.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.95:1

Contrast with white4.24:1WCAG normal text: Fail

Contrast with black4.95:1WCAG normal text: AA

Greyscale equivalent#6F6F6F

Inverted#4EAE30

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2D75D3no red cones; affects about 1% of men; ΔE 47.2 from the original

Deuteranopia#557ECCno green cones; the most common form, about 1% of men; ΔE 48.8 from the original

Tritanopia#B06689no blue cones; rare, and affects men and women equally; ΔE 48.3 from the original

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

Contrast with white, large text4.24:1WCAG large text: AA

Contrast with black, large text4.95:1WCAG large text: AAA

Named colours

Medium orchid · ΔE 2.6 Dark orchid · ΔE 15.9 Orchid · ΔE 18.3 Medium purple · ΔE 21.5 Violet · ΔE 21.7 Dark magenta · ΔE 21.8

Nearest named CSS colourMedium orchid (#BA55D3)ΔE 2.65, a close match

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#6FCF51

Analogous#7251CF, #CF51AE

Triadic#CFB151, #51CFB1

Split complementary#AECF51, #51CF72

Tetradic#CF7251, #6FCF51, #51AECF

Tints, shades & saturation

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

Lighter +40%#F9F1FB

Lighter +30%#E7C9F0

Lighter +20%#D5A1E5

Lighter +10%#C379DA

Darker −10%#9A33BA

Darker −20%#792892

Darker −30%#581D6A

Darker −40%#361242

More saturated +25%#C035EB

Less saturated −25%#A26DB3

Channel breakdown

R177

G81

B207

Red177 (69.4%)

Green81 (31.8%)

Blue207 (81.2%)

Hue285.71°

Saturation (HSL)56.76%

Lightness56.47%

Dominant channelBlue

Hex per channelR B1 · G 51 · B CF

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B151CF (chemical formula)

Formula
1,663.319 g/mol
153 atoms

B151CF has a molar mass of 1,663.319 g/mol, made up of 153 atoms across 3 elements: 151 × B, 1 × C, 1 × F.

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Molar mass

Molar mass1,663.319 g/mol

Total atoms per molecule153

Distinct elements3

Mass of one molecule2.7620062 × 10^-21 g

Molecules per gram3.6205567 × 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

B98.1%

C0.7%

F1.1%

Boron (B × 151)1,632.31 g/mol, 98.136%

Carbon (C)12.011 g/mol, 0.722%

Fluorine (F)18.998 g/mol, 1.142%

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