Dice notation
20d4
- 20d4
- 20 to 80
- mean 50
- mode 50
Rolling 20d4 gives a total between 20 and 80, with a mean of 50 and a standard deviation of 5. There are 1,099,511,627,776 equally likely ordered outcomes, and the most likely total is 50 at 7.911%.
The roll
Notation20d4
Dice20
Faces per die4
Minimum total20all 20 dice showing 1
Maximum total80all 20 dice showing 4
Distinct totals61
Mean50n(f + 1)/2 + modifier, exact
Variance25n(f² − 1)/12, exact
Standard deviation5≈
Counting the outcomes
Ordered outcomes1,099,511,627,7764^20, every die distinguishable
Most likely total50
Chance of that total7.910944%≈
Ways to roll it86,981,744,944exact count
Chance of the minimum9.09494702 × 10^-11%≈1 in 1,099,511,627,776
Chance of the maximum9.09494702 × 10^-11%≈1 in 1,099,511,627,776
Shape of the distribution
61 distinct totals, too many to list individually.
1st percentile38≈1.017% of rolls are this or lower
5th percentile42≈6.691% of rolls are this or lower
25th percentile47≈30.963% of rolls are this or lower
50th percentile50≈53.955% of rolls are this or lower
75th percentile53≈75.682% of rolls are this or lower
95th percentile58≈95.565% of rolls are this or lower
99th percentile62≈99.428% of rolls are this or lower
Chance of rolling at least
26100%≈
3599.9241%≈
5053.9555%≈
650.1565%≈
740%≈
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Also reads as
#2200DD (colour)
- #2200DD
- Blue
- Dark
- Nearest: Medium blue
#2200DD is a blue with RGB values 34, 0, 221 and HSL 249°, 100%, 43%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.
Colour values
#2200DD#2200DD
HEX#2200DD
HEX (short)#20D
RGBrgb(34, 0, 221)
RGB (0–1)0.1333, 0, 0.8667
RGB percentages13.3%, 0%, 86.7%
HSLhsl(249.2, 100%, 43.3%)
HSV / HSBhsv(249.2, 100%, 86.7%)
CMYK84.6%, 100%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,228,445
CSS custom property--colour: #2200DD;
Brightness & contrast
Relative luminance0.05561WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.94:1
Contrast with white9.94:1WCAG normal text: AAA
Contrast with black2.11:1WCAG normal text: Fail
Greyscale equivalent#171717
Inverted#DDFF22
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.94:1WCAG large text: AAA
Contrast with black, large text2.11:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#BBDD00
Analogous#004CDD, #9100DD
Triadic#DD2200, #00DD22
Split complementary#DD9100, #4CDD00
Tetradic#DD004C, #BBDD00, #00DD91
Tints, shades & saturation
Channel breakdown
R34
G0
B221
Red34 (13.3%)
Green0 (0%)
Blue221 (86.7%)
Hue249.23°
Saturation (HSL)100%
Lightness43.33%
Dominant channelBlue
Hex per channelR 22 · G 00 · B DD
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Harmonies
Similar named colours
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