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Recognised as Colour

#A178FF

  • #A178FF
  • Violet
  • Dark
  • Nearest: Medium slateblue

#A178FF is a violet with RGB values 161, 120, 255 and HSL 258°, 100%, 74%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#A178FF#A178FF
HEX#A178FF
RGBrgb(161, 120, 255)
RGB (0–1)0.6314, 0.4706, 1
RGB percentages63.1%, 47.1%, 100%
HSLhsl(258.2, 100%, 73.5%)
HSV / HSBhsv(258.2, 52.9%, 100%)
CMYK36.9%, 52.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,582,271
CSS custom property--colour: #A178FF;

Brightness & contrast

Relative luminance0.2823WCAG 2.x, 0 is black and 1 is white
Perceived brightness153.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.65:1
Contrast with white3.16:1WCAG normal text: Fail
Contrast with black6.65:1WCAG normal text: AA
Greyscale equivalent#8A8A8A
Inverted#5E8700

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D92FFno red cones; affects about 1% of men; ΔE 33.7 from the original
Deuteranopia#488FFCno green cones; the most common form, about 1% of men; ΔE 31.7 from the original
Tritanopia#8A94B0no blue cones; rare, and affects men and women equally; ΔE 62.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.16:1WCAG large text: AA
Contrast with black, large text6.65:1WCAG large text: AAA

Named colours

Medium slateblue · ΔE 9.5Medium purple · ΔE 15.2Slate blue · ΔE 17.7Medium orchid · ΔE 21.2Royal blue · ΔE 22.7Dark orchid · ΔE 26.2
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 9.53, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D6FF78
Analogous#7893FF, #E478FF
Triadic#FFA178, #78FFA1
Split complementary#FFE578, #93FF78
Tetradic#FF7893, #D6FF78, #78FFE4

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#E8DEFF
Lighter +10%#C5ABFF
Darker −10%#7D45FF
Darker −20%#5A12FF
Darker −30%#4300DE
Darker −40%#3400AB
More saturated +25%#A178FF
Less saturated −25%#A889EE

Channel breakdown

R161
G120
B255
Red161 (63.1%)
Green120 (47.1%)
Blue255 (100%)
Hue258.22°
Saturation (HSL)100%
Lightness73.53%
Dominant channelBlue
Hex per channelR A1 · G 78 · B FF

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Every value on this page was computed from “a178ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.