Recognised as Dice notation
15d6
- 15d6
- 15 to 90
- mean 52.5
Rolling 15d6 gives a total between 15 and 90, with a mean of 52.5 and a standard deviation of 6.6144. There are 470,184,984,576 equally likely ordered outcomes, and the most likely total is 52 or 53 at 5.951%.
The roll
Notation15d6
Dice15
Faces per die6
Minimum total15all 15 dice showing 1
Maximum total90all 15 dice showing 6
Distinct totals76
Mean52.5n(f + 1)/2 + modifier, exact
Variance43.75n(f² − 1)/12, exact
Standard deviation6.61437828≈
Counting the outcomes
Ordered outcomes470,184,984,5766^15, every die distinguishable
Most likely total52 and 53two totals share the peak
Chance of that total5.951145%≈
Ways to roll it27,981,391,815exact count
Chance of the minimum2.12682249 × 10^-10%≈1 in 470,184,984,576
Chance of the maximum2.12682249 × 10^-10%≈1 in 470,184,984,576
Shape of the distribution
76 distinct totals, too many to list individually.
1st percentile37≈1.105% of rolls are this or lower
5th percentile42≈6.561% of rolls are this or lower
25th percentile48≈27.438% of rolls are this or lower
50th percentile52≈50% of rolls are this or lower
75th percentile57≈77.34% of rolls are this or lower
95th percentile63≈95.186% of rolls are this or lower
99th percentile68≈99.282% of rolls are this or lower
Chance of rolling at least
23100%≈
3499.8337%≈
5350%≈
710.2791%≈
830%≈
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Also reads as
#1155DD (colour)
- #1155DD
- Blue
- Dark
- Nearest: Royal blue
#1155DD is a blue with RGB values 17, 85, 221 and HSL 220°, 86%, 47%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Royal blue.
Colour values
#1155DD#1155DD
HEX#1155DD
HEX (short)#15D
RGBrgb(17, 85, 221)
RGB (0–1)0.0667, 0.3333, 0.8667
RGB percentages6.7%, 33.3%, 86.7%
HSLhsl(220, 85.7%, 46.7%)
HSV / HSBhsv(220, 92.3%, 86.7%)
CMYK92.3%, 61.5%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,136,093
CSS custom property--colour: #1155DD;
Brightness & contrast
Relative luminance0.11837WCAG 2.x, 0 is black and 1 is white
Perceived brightness99.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.24:1
Contrast with white6.24:1WCAG normal text: AA
Contrast with black3.37:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#EEAA22
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.24:1WCAG large text: AAA
Contrast with black, large text3.37:1WCAG large text: AA
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#DD9911
Analogous#11BBDD, #3311DD
Triadic#DD1155, #55DD11
Split complementary#DD3311, #BBDD11
Tetradic#DD11BB, #DD9911, #11DD33
Tints, shades & saturation
Channel breakdown
R17
G85
B221
Red17 (6.7%)
Green85 (33.3%)
Blue221 (86.7%)
Hue220°
Saturation (HSL)85.71%
Lightness46.67%
Dominant channelBlue
Hex per channelR 11 · G 55 · B DD
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Harmonies
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