Dice notation
2d40
- 2d40
- 2 to 80
- mean 41
- mode 41
Rolling 2d40 gives a total between 2 and 80, with a mean of 41 and a standard deviation of 16.3248. There are 1,600 equally likely ordered outcomes, and the most likely total is 41 at 2.5%.
The canonical address for this page is /2d40.
The roll
Notation2d40
Dice2
Faces per die40
Minimum total2all 2 dice showing 1
Maximum total80all 2 dice showing 40
Distinct totals79
Mean41n(f + 1)/2 + modifier, exact
Variance266.5n(f² − 1)/12, exact
Standard deviation16.32482772≈
Counting the outcomes
Ordered outcomes1,60040^2, every die distinguishable
Most likely total41
Chance of that total2.5%≈
Ways to roll it40exact count
Chance of the minimum0.0625%≈1 in 1,600
Chance of the maximum0.0625%≈1 in 1,600
Shape of the distribution
79 distinct totals, too many to list individually.
1st percentile7≈1.313% of rolls are this or lower
5th percentile14≈5.688% of rolls are this or lower
25th percentile29≈25.375% of rolls are this or lower
50th percentile41≈51.25% of rolls are this or lower
75th percentile53≈76.375% of rolls are this or lower
95th percentile68≈95.125% of rolls are this or lower
99th percentile75≈99.063% of rolls are this or lower
Chance of rolling at least
1097.75%≈
2286.875%≈
4151.25%≈
6113.125%≈
722.8125%≈
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Also reads as
#002D40 (colour)
- #002D40
- Cyan
- Dark
- Nearest: Dark slate grey
#002D40 is a cyan with RGB values 0, 45, 64 and HSL 198°, 100%, 13%. It is a dark colour, so white text on it reaches 14.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#002D40#002D40
HEX#002D40
RGBrgb(0, 45, 64)
RGB (0–1)0, 0.1765, 0.251
RGB percentages0%, 17.6%, 25.1%
HSLhsl(197.8, 100%, 12.5%)
HSV / HSBhsv(197.8, 100%, 25.1%)
CMYK100%, 29.7%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,584
CSS custom property--colour: #002D40;
Brightness & contrast
Relative luminance0.02247WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.49:1
Contrast with white14.49:1WCAG normal text: AAA
Contrast with black1.45:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FFD2BF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.49:1WCAG large text: AAA
Contrast with black, large text1.45:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#401300
Analogous#004033, #000D40
Triadic#40002D, #2D4000
Split complementary#40000D, #403300
Tetradic#330040, #401300, #0D4000
Tints, shades & saturation
Channel breakdown
R0
G45
B64
Red0 (0%)
Green45 (17.6%)
Blue64 (25.1%)
Hue197.81°
Saturation (HSL)100%
Lightness12.55%
Dominant channelBlue
Hex per channelR 00 · G 2D · B 40
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Harmonies
Similar named colours
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