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Recognised as Dice notation

2d660

  • 2d660
  • 2 to 1320
  • mean 661
  • mode 661

Rolling 2d660 gives a total between 2 and 1,320, with a mean of 661 and a standard deviation of 269.4436. There are 435,600 equally likely ordered outcomes, and the most likely total is 661 at 0.152%.

The canonical address for this page is /2d660.

The roll

Notation2d660
Dice2
Faces per die660
Minimum total2all 2 dice showing 1
Maximum total1,320all 2 dice showing 660
Distinct totals1,319
Mean661n(f + 1)/2 + modifier, exact
Variance72,599.83333333n(f² − 1)/12, exact
Standard deviation269.44356243≈

Counting the outcomes

Ordered outcomes435,600660^2, every die distinguishable
Most likely total661
Chance of that total0.151515%≈
Ways to roll it660exact count
Chance of the minimum0.00022957%≈1 in 435,600
Chance of the maximum0.00022957%≈1 in 435,600

Shape of the distribution

1,319 distinct totals, too many to list individually.

1st percentile94≈1.003% of rolls are this or lower
5th percentile210≈5.038% of rolls are this or lower
25th percentile468≈25.087% of rolls are this or lower
50th percentile661≈50.076% of rolls are this or lower
75th percentile854≈75.02% of rolls are this or lower
95th percentile1,112≈95.01% of rolls are this or lower
99th percentile1,228≈99.018% of rolls are this or lower

Chance of rolling at least

13497.9848%≈
33287.4621%≈
66150.0758%≈
99112.5379%≈
1,1882.0457%≈

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The same dice, different counts

The same count, different dice

Also reads as

#2D0660 (colour)

  • #2D0660
  • Violet
  • Dark
  • Nearest: Midnight blue

#2D0660 is a violet with RGB values 45, 6, 96 and HSL 266°, 88%, 20%. It is a dark colour, so white text on it reaches 16.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

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Colour values

#2D0660#2D0660
HEX#2D0660
RGBrgb(45, 6, 96)
RGB (0–1)0.1765, 0.0235, 0.3765
RGB percentages17.6%, 2.4%, 37.6%
HSLhsl(266, 88.2%, 20%)
HSV / HSBhsv(266, 93.7%, 37.6%)
CMYK53.1%, 93.7%, 0%, 62.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,950,752
CSS custom property--colour: #2D0660;

Brightness & contrast

Relative luminance0.01533WCAG 2.x, 0 is black and 1 is white
Perceived brightness41 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.07:1
Contrast with white16.07:1WCAG normal text: AAA
Contrast with black1.31:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#D2F99F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002262no red cones; affects about 1% of men; ΔE 21 from the original
Deuteranopia#00205Eno green cones; the most common form, about 1% of men; ΔE 21.3 from the original
Tritanopia#1C2336no blue cones; rare, and affects men and women equally; ΔE 46.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text16.07:1WCAG large text: AAA
Contrast with black, large text1.31:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.1Indigo · ΔE 18.1Rebecca purple · ΔE 20.9Dark slateblue · ΔE 21.8Navy · ΔE 22.7Dark blue · ΔE 27.6
Nearest named CSS colourMidnight blue (#191970)ΔE 9.1, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#396006
Analogous#060C60, #5A0660
Triadic#602D06, #06602D
Split complementary#605A06, #0C6006
Tetradic#60060C, #396006, #06605A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8D3FF3
Lighter +30%#710FF0
Lighter +20%#5A0CC0
Lighter +10%#440990
Darker −10%#170330
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2C0066
Less saturated −25%#2F1353

Channel breakdown

R45
G6
B96
Red45 (17.6%)
Green6 (2.4%)
Blue96 (37.6%)
Hue266°
Saturation (HSL)88.24%
Lightness20%
Dominant channelBlue
Hex per channelR 2D · G 06 · B 60

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Every value on this page was computed from “2d0660” by Nerdulator’s games engine. Nothing here was retrieved from a database of answers or written by a model.