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Colour

#643E6C

  • #643E6C
  • Violet
  • Dark
  • Nearest: Dark slateblue

#643E6C is a violet with RGB values 100, 62, 108 and HSL 290°, 27%, 33%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#643E6C#643E6C
HEX#643E6C
RGBrgb(100, 62, 108)
RGB (0–1)0.3922, 0.2431, 0.4235
RGB percentages39.2%, 24.3%, 42.4%
HSLhsl(289.6, 27.1%, 33.3%)
HSV / HSBhsv(289.6, 42.6%, 42.4%)
CMYK7.4%, 42.6%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,569,580
CSS custom property--colour: #643E6C;

Brightness & contrast

Relative luminance0.07237WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.58:1
Contrast with white8.58:1WCAG normal text: AAA
Contrast with black2.45:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#9BC193

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#38496Eno red cones; affects about 1% of men; ΔE 21 from the original
Deuteranopia#424E6Bno green cones; the most common form, about 1% of men; ΔE 22 from the original
Tritanopia#654450no blue cones; rare, and affects men and women equally; ΔE 20.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.58:1WCAG large text: AAA
Contrast with black, large text2.45:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22Rebecca purple · ΔE 32.3Midnight blue · ΔE 34.4Dim grey · ΔE 34.4Slate grey · ΔE 35.4Light slate grey · ΔE 37.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.04, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#466C3E
Analogous#4D3E6C, #6C3E5D
Triadic#6C643E, #3E6C64
Split complementary#5D6C3E, #3E6C4D
Tetradic#6C4D3E, #466C3E, #3E5D6C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C7A9CD
Lighter +30%#B288BB
Lighter +20%#9D68A8
Lighter +10%#82518C
Darker −10%#462B4C
Darker −20%#28192B
Darker −30%#0A060B
Darker −40%#000000
More saturated +25%#722981
Less saturated −25%#565357

Channel breakdown

R100
G62
B108
Red100 (39.2%)
Green62 (24.3%)
Blue108 (42.4%)
Hue289.57°
Saturation (HSL)27.06%
Lightness33.33%
Dominant channelBlue
Hex per channelR 64 · G 3E · B 6C

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Every value on this page was computed from “643e6c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.