Dice notation
2d10
- 2d10
- 2 to 20
- mean 11
- mode 11
Rolling 2d10 gives a total between 2 and 20, with a mean of 11 and a standard deviation of 4.062. There are 100 equally likely ordered outcomes, and the most likely total is 11 at 10%.
The canonical address for this page is /2d10.
The roll
Notation2d10
Dice2
Faces per die10
Minimum total2all 2 dice showing 1
Maximum total20all 2 dice showing 10
Distinct totals19
Mean11n(f + 1)/2 + modifier, exact
Variance16.5n(f² − 1)/12, exact
Standard deviation4.0620192≈
Counting the outcomes
Ordered outcomes10010^2, every die distinguishable
Most likely total11
Chance of that total10%≈
Ways to roll it10exact count
Chance of the minimum1%≈1 in 100
Chance of the maximum1%≈1 in 100
Probability of each total
Exact counts, by enumeration over every combination.
21%
32%
43%
54%
65%
76%
87%
98%
109%
1110%
129%
138%
147%
156%
165%
174%
183%
192%
201%
21%1 way
32%2 ways
43%3 ways
54%4 ways
65%5 ways
76%6 ways
87%7 ways
98%8 ways
109%9 ways
1110%10 ways
129%9 ways
138%8 ways
147%7 ways
156%6 ways
165%5 ways
174%4 ways
183%3 ways
192%2 ways
201%1 way
Chance of rolling at least
497%≈
785%≈
1155%≈
1615%≈
186%≈
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Also reads as
#2D0010 (colour)
- #2D0010
- Red
- Dark
- Nearest: Black
#2D0010 is a red with RGB values 45, 0, 16 and HSL 339°, 100%, 9%. It is a dark colour, so white text on it reaches 18.8:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#2D0010#2D0010
HEX#2D0010
RGBrgb(45, 0, 16)
RGB (0–1)0.1765, 0, 0.0627
RGB percentages17.6%, 0%, 6.3%
HSLhsl(338.7, 100%, 8.8%)
HSV / HSBhsv(338.7, 100%, 17.6%)
CMYK0%, 100%, 64.4%, 82.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,949,136
CSS custom property--colour: #2D0010;
Brightness & contrast
Relative luminance0.00595WCAG 2.x, 0 is black and 1 is white
Perceived brightness25.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.77:1
Contrast with white18.77:1WCAG normal text: AAA
Contrast with black1.12:1WCAG normal text: Fail
Greyscale equivalent#0B0B0B
Inverted#D2FFEF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.77:1WCAG large text: AAA
Contrast with black, large text1.12:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#002D1D
Analogous#2D0026, #2D0700
Triadic#102D00, #00102D
Split complementary#002D07, #00262D
Tetradic#262D00, #002D1D, #07002D
Tints, shades & saturation
Channel breakdown
R45
G0
B16
Red45 (17.6%)
Green0 (0%)
Blue16 (6.3%)
Hue338.67°
Saturation (HSL)100%
Lightness8.82%
Dominant channelRed
Hex per channelR 2D · G 00 · B 10
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