Recognised as Dice notation
9d21
- 9d21
- 9 to 189
- mean 99
- mode 99
Rolling 9d21 gives a total between 9 and 189, with a mean of 99 and a standard deviation of 18.1659. There are 794,280,046,581 equally likely ordered outcomes, and the most likely total is 99 at 2.159%.
The roll
Notation9d21
Dice9
Faces per die21
Minimum total9all 9 dice showing 1
Maximum total189all 9 dice showing 21
Distinct totals181
Mean99n(f + 1)/2 + modifier, exact
Variance330n(f² − 1)/12, exact
Standard deviation18.16590212≈
Counting the outcomes
Ordered outcomes794,280,046,58121^9, every die distinguishable
Most likely total99
Chance of that total2.159056%≈
Ways to roll it17,148,949,027exact count
Chance of the minimum1.25900179 × 10^-10%≈1 in 794,280,046,581
Chance of the maximum1.25900179 × 10^-10%≈1 in 794,280,046,581
Shape of the distribution
181 distinct totals, too many to list individually.
1st percentile57≈1.026% of rolls are this or lower
5th percentile69≈5.256% of rolls are this or lower
25th percentile87≈26.638% of rolls are this or lower
50th percentile99≈51.08% of rolls are this or lower
75th percentile111≈75.121% of rolls are this or lower
95th percentile129≈95.325% of rolls are this or lower
99th percentile141≈99.126% of rolls are this or lower
Chance of rolling at least
2799.9996%≈
5499.4738%≈
9951.0795%≈
1440.6258%≈
1710.0006%≈
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Also reads as
#99DD22 (colour)
- #99DD22
- Green
- Light
- Nearest: Yellow green
#99DD22 is a green with RGB values 153, 221, 34 and HSL 82°, 73%, 50%. It is a light colour, so black text on it reaches 12.7:1 contrast (AAA for normal text). The nearest named colour is Yellow green.
Colour values
#99DD22#99DD22
HEX#99DD22
HEX (short)#9D2
RGBrgb(153, 221, 34)
RGB (0–1)0.6, 0.8667, 0.1333
RGB percentages60%, 86.7%, 13.3%
HSLhsl(81.8, 73.3%, 50%)
HSV / HSBhsv(81.8, 84.6%, 86.7%)
CMYK30.8%, 0%, 84.6%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,083,618
CSS custom property--colour: #99DD22;
Brightness & contrast
Relative luminance0.58601WCAG 2.x, 0 is black and 1 is white
Perceived brightness189.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.72:1
Contrast with white1.65:1WCAG normal text: Fail
Contrast with black12.72:1WCAG normal text: AAA
Greyscale equivalent#C1C1C1
Inverted#6622DD
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.65:1WCAG large text: Fail
Contrast with black, large text12.72:1WCAG large text: AAA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#6622DD
Analogous#DDC322, #3CDD22
Triadic#2299DD, #DD2299
Split complementary#223CDD, #C322DD
Tetradic#22DDC3, #6622DD, #DD223C
Tints, shades & saturation
Channel breakdown
R153
G221
B34
Red153 (60%)
Green221 (86.7%)
Blue34 (13.3%)
Hue81.82°
Saturation (HSL)73.33%
Lightness50%
Dominant channelGreen
Hex per channelR 99 · G DD · B 22
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Harmonies
Similar named colours
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