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Colour

#640FF4

  • #640FF4
  • Violet
  • Dark
  • Nearest: Blue

#640FF4 is a violet with RGB values 100, 15, 244 and HSL 262°, 91%, 51%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Blue.

Colour values

#640FF4#640FF4
HEX#640FF4
RGBrgb(100, 15, 244)
RGB (0–1)0.3922, 0.0588, 0.9569
RGB percentages39.2%, 5.9%, 95.7%
HSLhsl(262.3, 91.2%, 50.8%)
HSV / HSBhsv(262.3, 93.9%, 95.7%)
CMYK59%, 93.9%, 0%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,557,684
CSS custom property--colour: #640FF4;

Brightness & contrast

Relative luminance0.09583WCAG 2.x, 0 is black and 1 is white
Perceived brightness99.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.2:1
Contrast with white7.2:1WCAG normal text: AAA
Contrast with black2.92:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#9BF00B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005CF9no red cones; affects about 1% of men; ΔE 39.9 from the original
Deuteranopia#0051F0no green cones; the most common form, about 1% of men; ΔE 35.8 from the original
Tritanopia#006490no blue cones; rare, and affects men and women equally; ΔE 105.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.2:1WCAG large text: AAA
Contrast with black, large text2.92:1WCAG large text: Fail

Named colours

Blue · ΔE 15.2Medium blue · ΔE 15.7Blue violet · ΔE 20.8Dark violet · ΔE 23.3Dark orchid · ΔE 36.1Dark blue · ΔE 42.7
Nearest named CSS colourBlue (#0000FF)ΔE 15.24, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9FF40F
Analogous#0F2CF4, #D70FF4
Triadic#F4640F, #0FF464
Split complementary#F4D70F, #2CF40F
Tetradic#F40F2C, #9FF40F, #0FF4D7

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E2D2FD
Lighter +30%#C2A1FB
Lighter +20%#A371F8
Lighter +10%#8340F6
Darker −10%#5009C7
Darker −20%#3C0796
Darker −30%#290565
Darker −40%#150235
More saturated +25%#6104FF
Less saturated −25%#6C2ED5

Channel breakdown

R100
G15
B244
Red100 (39.2%)
Green15 (5.9%)
Blue244 (95.7%)
Hue262.27°
Saturation (HSL)91.24%
Lightness50.78%
Dominant channelBlue
Hex per channelR 64 · G 0F · B F4

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Every value on this page was computed from “640ff4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.