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Recognised as Dice notation

21d7

  • 21d7
  • 21 to 147
  • mean 84
  • mode 84

Rolling 21d7 gives a total between 21 and 147, with a mean of 84 and a standard deviation of 9.1652. There are 558,545,864,083,284,007 equally likely ordered outcomes, and the most likely total is 84 at 4.32%.

The canonical address for this page is /21d7.

The roll

Notation21d7
Dice21
Faces per die7
Minimum total21all 21 dice showing 1
Maximum total147all 21 dice showing 7
Distinct totals127
Mean84n(f + 1)/2 + modifier, exact
Variance84n(f² − 1)/12, exact
Standard deviation9.16515139≈

Counting the outcomes

Ordered outcomes558,545,864,083,284,0077^21, every die distinguishable
Most likely total84
Chance of that total4.320341%≈
Ways to roll it24,131,083,600,660,801exact count
Chance of the minimum1.79036327 × 10^-16%≈1 in 558,545,864,083,284,007
Chance of the maximum1.79036327 × 10^-16%≈1 in 558,545,864,083,284,007

Shape of the distribution

127 distinct totals, too many to list individually.

1st percentile63≈1.224% of rolls are this or lower
5th percentile69≈5.696% of rolls are this or lower
25th percentile78≈27.544% of rolls are this or lower
50th percentile84≈52.16% of rolls are this or lower
75th percentile90≈75.963% of rolls are this or lower
95th percentile99≈95.462% of rolls are this or lower
99th percentile105≈99.092% of rolls are this or lower

Chance of rolling at least

34100%≈
5399.9787%≈
8452.1602%≈
1160.0213%≈
1341.65029877 × 10^-7%≈

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The same dice, different counts

The same count, different dice

Also reads as

#021D07 (colour)

  • #021D07
  • Green
  • Dark
  • Nearest: Black

#021D07 is a green with RGB values 2, 29, 7 and HSL 131°, 87%, 6%. It is a dark colour, so white text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Black.

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Colour values

#021D07#021D07
HEX#021D07
RGBrgb(2, 29, 7)
RGB (0–1)0.0078, 0.1137, 0.0275
RGB percentages0.8%, 11.4%, 2.7%
HSLhsl(131.1, 87.1%, 6.1%)
HSV / HSBhsv(131.1, 93.1%, 11.4%)
CMYK93.1%, 0%, 75.9%, 88.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer138,503
CSS custom property--colour: #021D07;

Brightness & contrast

Relative luminance0.00907WCAG 2.x, 0 is black and 1 is white
Perceived brightness22.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.78:1
Contrast with white17.78:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#FDE2F8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1D1905no red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#1A1708no green cones; the most common form, about 1% of men; ΔE 13.5 from the original
Tritanopia#001C18no blue cones; rare, and affects men and women equally; ΔE 10.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.78:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Black · ΔE 19.2Dark slate grey · ΔE 26.6Dim grey · ΔE 40.1Dark olivegreen · ΔE 40.5Teal · ΔE 46Gray · ΔE 48.6
Nearest named CSS colourBlack (#000000)ΔE 19.15, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1D0218
Analogous#0B1D02, #021D14
Triadic#07021D, #1D0702
Split complementary#14021D, #1D020B
Tetradic#020B1D, #1D0218, #1D1402

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#0FDC35
Lighter +30%#0CAC2A
Lighter +20%#097C1E
Lighter +10%#054D13
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F06
Less saturated −25%#061909

Channel breakdown

R2
G29
B7
Red2 (0.8%)
Green29 (11.4%)
Blue7 (2.7%)
Hue131.11°
Saturation (HSL)87.1%
Lightness6.08%
Dominant channelGreen
Hex per channelR 02 · G 1D · B 07

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Every value on this page was computed from “021d07” by Nerdulator’s games engine. Nothing here was retrieved from a database of answers or written by a model.