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Recognised as Colour

#641C91

  • #641C91
  • Violet
  • Dark
  • Nearest: Indigo

#641C91 is a violet with RGB values 100, 28, 145 and HSL 277°, 68%, 34%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Indigo.

Colour values

#641C91#641C91
HEX#641C91
RGBrgb(100, 28, 145)
RGB (0–1)0.3922, 0.1098, 0.5686
RGB percentages39.2%, 11%, 56.9%
HSLhsl(276.9, 67.6%, 33.9%)
HSV / HSBhsv(276.9, 80.7%, 56.9%)
CMYK31%, 80.7%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,560,913
CSS custom property--colour: #641C91;

Brightness & contrast

Relative luminance0.05584WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.92:1
Contrast with white9.92:1WCAG normal text: AAA
Contrast with black2.12:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#9BE36E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004094no red cones; affects about 1% of men; ΔE 33.2 from the original
Deuteranopia#00438Fno green cones; the most common form, about 1% of men; ΔE 37.5 from the original
Tritanopia#5D3A57no blue cones; rare, and affects men and women equally; ΔE 49.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.92:1WCAG large text: AAA
Contrast with black, large text2.12:1WCAG large text: Fail

Named colours

Indigo · ΔE 8.7Rebecca purple · ΔE 9.6Purple · ΔE 15.5Dark magenta · ΔE 16.5Navy · ΔE 21.8Midnight blue · ΔE 22.9
Nearest named CSS colourIndigo (#4B0082)ΔE 8.71, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#49911C
Analogous#291C91, #911C84
Triadic#91641C, #1C9164
Split complementary#84911C, #1C9129
Tetradic#91291C, #49911C, #1C8491

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C790E9
Lighter +30%#B165E1
Lighter +20%#9C3AD9
Lighter +10%#8124BC
Darker −10%#471466
Darker −20%#290B3C
Darker −30%#0C0311
Darker −40%#000000
More saturated +25%#6906A7
Less saturated −25%#5F327B

Channel breakdown

R100
G28
B145
Red100 (39.2%)
Green28 (11%)
Blue145 (56.9%)
Hue276.92°
Saturation (HSL)67.63%
Lightness33.92%
Dominant channelBlue
Hex per channelR 64 · G 1C · B 91

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Every value on this page was computed from “641c91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.