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Recognised as Colour

#643EAE

  • #643EAE
  • Violet
  • Dark
  • Nearest: Rebecca purple

#643EAE is a violet with RGB values 100, 62, 174 and HSL 260°, 47%, 46%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#643EAE#643EAE
HEX#643EAE
RGBrgb(100, 62, 174)
RGB (0–1)0.3922, 0.2431, 0.6824
RGB percentages39.2%, 24.3%, 68.2%
HSLhsl(260.4, 47.5%, 46.3%)
HSV / HSBhsv(260.4, 64.4%, 68.2%)
CMYK42.5%, 64.4%, 0%, 31.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,569,646
CSS custom property--colour: #643EAE;

Brightness & contrast

Relative luminance0.09211WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.39:1
Contrast with white7.39:1WCAG normal text: AAA
Contrast with black2.84:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#9BC151

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057B2no red cones; affects about 1% of men; ΔE 27.5 from the original
Deuteranopia#0054ACno green cones; the most common form, about 1% of men; ΔE 28 from the original
Tritanopia#505870no blue cones; rare, and affects men and women equally; ΔE 55.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.39:1WCAG large text: AAA
Contrast with black, large text2.84:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 7.9Slate blue · ΔE 11.4Indigo · ΔE 18.6Medium slateblue · ΔE 19.4Medium purple · ΔE 19.7Dark slateblue · ΔE 20.8
Nearest named CSS colourRebecca purple (#663399)ΔE 7.87, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#88AE3E
Analogous#3E50AE, #9C3EAE
Triadic#AE643E, #3EAE64
Split complementary#AE9C3E, #50AE3E
Tetradic#AE3E50, #88AE3E, #3EAE9C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7CBED
Lighter +30%#B9A6DF
Lighter +20%#9C80D2
Lighter +10%#7E5BC4
Darker −10%#4E3188
Darker −20%#392363
Darker −30%#23163D
Darker −40%#0E0818
More saturated +25%#5B20CC
Less saturated −25%#6D5C91

Channel breakdown

R100
G62
B174
Red100 (39.2%)
Green62 (24.3%)
Blue174 (68.2%)
Hue260.36°
Saturation (HSL)47.46%
Lightness46.27%
Dominant channelBlue
Hex per channelR 64 · G 3E · B AE

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Every value on this page was computed from “643eae” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.