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Colour

#6633DD

  • #6633DD
  • Violet
  • Dark
  • Nearest: Blue violet

#6633DD is a violet with RGB values 102, 51, 221 and HSL 258°, 71%, 53%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Blue violet.

Colour values

#6633DD#6633DD
HEX#6633DD
HEX (short)#63D
RGBrgb(102, 51, 221)
RGB (0–1)0.4, 0.2, 0.8667
RGB percentages40%, 20%, 86.7%
HSLhsl(258, 71.4%, 53.3%)
HSV / HSBhsv(258, 76.9%, 86.7%)
CMYK53.8%, 76.9%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,697,949
CSS custom property--colour: #6633DD;

Brightness & contrast

Relative luminance0.10413WCAG 2.x, 0 is black and 1 is white
Perceived brightness101 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.81:1
Contrast with white6.81:1WCAG normal text: AA
Contrast with black3.08:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#99CC22

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005EE2no red cones; affects about 1% of men; ΔE 32.3 from the original
Deuteranopia#0056DAno green cones; the most common form, about 1% of men; ΔE 30 from the original
Tritanopia#356487no blue cones; rare, and affects men and women equally; ΔE 84.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.81:1WCAG large text: AAA
Contrast with black, large text3.08:1WCAG large text: AA

Named colours

Blue violet · ΔE 10.3Dark violet · ΔE 17.4Dark orchid · ΔE 19.1Medium blue · ΔE 20.2Medium slateblue · ΔE 27Dark blue · ΔE 27.6
Nearest named CSS colourBlue violet (#8A2BE2)ΔE 10.33, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AADD33
Analogous#3355DD, #BB33DD
Triadic#DD6633, #33DD66
Split complementary#DDBB33, #55DD33
Tetradic#DD3355, #AADD33, #33DDBB

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9E2FA
Lighter +30%#C8B6F3
Lighter +20%#A88AEC
Lighter +10%#875FE4
Darker −10%#4F20BD
Darker −20%#3D1892
Darker −30%#2A1166
Darker −40%#180A3A
More saturated +25%#5A15FB
Less saturated −25%#7251BF

Channel breakdown

R102
G51
B221
Red102 (40%)
Green51 (20%)
Blue221 (86.7%)
Hue258°
Saturation (HSL)71.43%
Lightness53.33%
Dominant channelBlue
Hex per channelR 66 · G 33 · B DD

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Every value on this page was computed from “6633dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.