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Recognised as Dice notation

81d30

  • 81d30
  • 81 to 2430
  • mean 1,255.5

Rolling 81d30 gives a total between 81 and 2,430, with a mean of 1,255.5 and a standard deviation of 77.899. There are 443,426,488,243,037,769,948,249,630,619,149,892,803,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 equally likely ordered outcomes, and the most likely total is 1,255 or 1,256 at 0.511%.

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The roll

Notation81d30
Dice81
Faces per die30
Minimum total81all 81 dice showing 1
Maximum total2,430all 81 dice showing 30
Distinct totals2,350
Mean1,255.5n(f + 1)/2 + modifier, exact
Variance6,068.25n(f² − 1)/12, exact
Standard deviation77.89897304≈

Counting the outcomes

Ordered outcomes443,426,488,243,037,769,948,249,630,619,149,892,803,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,00030^81, every die distinguishable
Most likely total1,255 and 1,256two totals share the peak
Chance of that total0.511166%≈
Ways to roll it2,266,645,191,740,306,364,500,872,372,924,593,600,516,307,358,932,112,281,340,927,320,301,961,998,342,566,261,922,056,328,332,902,580,697,165,627,850,708,888exact count
Chance of the minimum2.25516523 × 10^-118%≈1 in 443,426,488,243,037,769,948,249,630,619,149,892,803,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
Chance of the maximum2.25516523 × 10^-118%≈1 in 443,426,488,243,037,769,948,249,630,619,149,892,803,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

Shape of the distribution

2,350 distinct totals, too many to list individually.

1st percentile1,075≈1.033% of rolls are this or lower
5th percentile1,127≈5.021% of rolls are this or lower
25th percentile1,203≈25.255% of rolls are this or lower
50th percentile1,256≈50.511% of rolls are this or lower
75th percentile1,308≈75.153% of rolls are this or lower
95th percentile1,384≈95.111% of rolls are this or lower
99th percentile1,436≈99.002% of rolls are this or lower

Chance of rolling at least

316100%≈
668100%≈
1,25650%≈
1,8432.51903242 × 10^-13%≈
2,1951.49151348 × 10^-41%≈

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The same dice, different counts

The same count, different dice

Also reads as

#81D030 (colour)

  • #81D030
  • Green
  • Dark
  • Nearest: Yellow green

#81D030 is a green with RGB values 129, 208, 48 and HSL 90°, 63%, 50%. It is a dark colour, so black text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Yellow green.

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Colour values

#81D030#81D030
HEX#81D030
RGBrgb(129, 208, 48)
RGB (0–1)0.5059, 0.8157, 0.1882
RGB percentages50.6%, 81.6%, 18.8%
HSLhsl(89.6, 63%, 50.2%)
HSV / HSBhsv(89.6, 76.9%, 81.6%)
CMYK38%, 0%, 76.9%, 18.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,507,440
CSS custom property--colour: #81D030;

Brightness & contrast

Relative luminance0.49992WCAG 2.x, 0 is black and 1 is white
Perceived brightness175 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 11:1
Contrast with white1.91:1WCAG normal text: Fail
Contrast with black11:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#7E2FCF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D9BF00no red cones; affects about 1% of men; ΔE 44.2 from the original
Deuteranopia#CEB941no green cones; the most common form, about 1% of men; ΔE 42.9 from the original
Tritanopia#82C7B2no blue cones; rare, and affects men and women equally; ΔE 66.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.91:1WCAG large text: Fail
Contrast with black, large text11:1WCAG large text: AAA

Named colours

Yellow green · ΔE 10.5Limegreen · ΔE 19.6Green yellow · ΔE 22.6Lawn green · ΔE 29.8Chartreuse · ΔE 30.9Light green · ΔE 31.2
Nearest named CSS colourYellow green (#9ACD32)ΔE 10.5, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F30D0
Analogous#D0CF30, #31D030
Triadic#3081D0, #D03081
Split complementary#3031D0, #CF30D0
Tetradic#30D0CF, #7F30D0, #D03031

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6F6D6
Lighter +30%#CDECAD
Lighter +20%#B4E383
Lighter +10%#9AD95A
Darker −10%#67A726
Darker −20%#4E7E1C
Darker −30%#345413
Darker −40%#1A2A0A
More saturated +25%#81F010
Less saturated −25%#81B050

Channel breakdown

R129
G208
B48
Red129 (50.6%)
Green208 (81.6%)
Blue48 (18.8%)
Hue89.63°
Saturation (HSL)62.99%
Lightness50.2%
Dominant channelGreen
Hex per channelR 81 · G D0 · B 30

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Every value on this page was computed from “81d030” by Nerdulator’s games engine. Nothing here was retrieved from a database of answers or written by a model.