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Recognised as Colour

#64408B

  • #64408B
  • Violet
  • Dark
  • Nearest: Dark slateblue

#64408B is a violet with RGB values 100, 64, 139 and HSL 269°, 37%, 40%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#64408B#64408B
HEX#64408B
RGBrgb(100, 64, 139)
RGB (0–1)0.3922, 0.251, 0.5451
RGB percentages39.2%, 25.1%, 54.5%
HSLhsl(268.8, 36.9%, 39.8%)
HSV / HSBhsv(268.8, 54%, 54.5%)
CMYK28.1%, 54%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,570,123
CSS custom property--colour: #64408B;

Brightness & contrast

Relative luminance0.0824WCAG 2.x, 0 is black and 1 is white
Perceived brightness87.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.93:1
Contrast with white7.93:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#9BBF74

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#27508Eno red cones; affects about 1% of men; ΔE 23.8 from the original
Deuteranopia#325189no green cones; the most common form, about 1% of men; ΔE 24.3 from the original
Tritanopia#5D4E5Fno blue cones; rare, and affects men and women equally; ΔE 35.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.93:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 8.9Rebecca purple · ΔE 16Midnight blue · ΔE 23Slate blue · ΔE 24.7Medium purple · ΔE 25.4Purple · ΔE 27.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 8.89, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#678B40
Analogous#40428B, #89408B
Triadic#8B6440, #408B64
Split complementary#8B8A40, #418B40
Tetradic#8B4042, #678B40, #408B89

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBB8DF
Lighter +30%#B196CE
Lighter +20%#9773BE
Lighter +10%#7D50AE
Darker −10%#4B3068
Darker −20%#322045
Darker −30%#191022
Darker −40%#000000
More saturated +25%#6327A4
Less saturated −25%#655972

Channel breakdown

R100
G64
B139
Red100 (39.2%)
Green64 (25.1%)
Blue139 (54.5%)
Hue268.8°
Saturation (HSL)36.95%
Lightness39.8%
Dominant channelBlue
Hex per channelR 64 · G 40 · B 8B

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Every value on this page was computed from “64408b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.