Recognised as Dice notation

1d15

1d15
1 to 15
mean 8

Rolling 1d15 gives a total between 1 and 15, with a mean of 8 and a standard deviation of 4.3205. There are 15 equally likely ordered outcomes, and the most likely total is 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 at 6.667%.

The canonical address for this page is /1d15.

The roll

Notation1d15

Dice1

Faces per die15

Minimum total1a 1

Maximum total15all 1 dice showing 15

Distinct totals15

Mean8n(f + 1)/2 + modifier, exact

Variance18.66666667n(f² − 1)/12, exact

Standard deviation4.3204938≈

Counting the outcomes

Ordered outcomes1515^1, every die distinguishable

Most likely total1 and 2 and 3 and 4 and 5 and 6 and 7 and 8 and 9 and 10 and 11 and 12 and 13 and 14 and 15two totals share the peak

Chance of that total6.666667%≈

Ways to roll it1exact count

Chance of the minimum6.66666667%≈1 in 15

Chance of the maximum6.66666667%≈1 in 15

Probability of each total

Exact counts, by enumeration over every combination.

16.67%

26.67%

36.67%

46.67%

56.67%

66.67%

76.67%

86.67%

96.67%

106.67%

116.67%

126.67%

136.67%

146.67%

156.67%

16.6667%1 way

26.6667%1 way

36.6667%1 way

46.6667%1 way

56.6667%1 way

66.6667%1 way

76.6667%1 way

86.6667%1 way

96.6667%1 way

106.6667%1 way

116.6667%1 way

126.6667%1 way

136.6667%1 way

146.6667%1 way

156.6667%1 way

Chance of rolling at least

293.3333%≈

573.3333%≈

853.3333%≈

1226.6667%≈

1413.3333%≈

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

The same dice, different counts

The same count, different dice

Also reads as

#D00015 (colour)

#D00015
Red
Dark
Nearest: Crimson

#D00015 is a red with RGB values 208, 0, 21 and HSL 354°, 100%, 41%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

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Colour values

#D00015#D00015

HEX#D00015

RGBrgb(208, 0, 21)

RGB (0–1)0.8157, 0, 0.0824

RGB percentages81.6%, 0%, 8.2%

HSLhsl(353.9, 100%, 40.8%)

HSV / HSBhsv(353.9, 100%, 81.6%)

CMYK0%, 100%, 89.9%, 18.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,631,509

CSS custom property--colour: #D00015;

Brightness & contrast

Relative luminance0.13464WCAG 2.x, 0 is black and 1 is white

Perceived brightness114 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.69:1

Contrast with white5.69:1WCAG normal text: AA

Contrast with black3.69:1WCAG normal text: Fail

Greyscale equivalent#2E2E2E

Inverted#2FFFEA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#574C11no red cones; affects about 1% of men; ΔE 74.1 from the original

Deuteranopia#847500no green cones; the most common form, about 1% of men; ΔE 74.2 from the original

Tritanopia#E60010no blue cones; rare, and affects men and women equally; ΔE 10.1 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.69:1WCAG large text: AAA

Contrast with black, large text3.69:1WCAG large text: AA

Named colours

Crimson · ΔE 17.2 Firebrick · ΔE 18.7 Tomato · ΔE 22.1 Red · ΔE 22.5 Orange red · ΔE 23.4 Dark red · ΔE 25.3

Nearest named CSS colourCrimson (#DC143C)ΔE 17.25, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#00D0BB

Analogous#D0007D, #D05300

Triadic#15D000, #0015D0

Split complementary#00D053, #007DD0

Tetradic#7DD000, #00D0BB, #5300D0

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FF9DA7

Lighter +30%#FF6A79

Lighter +20%#FF374B

Lighter +10%#FF041D

Darker −10%#9D0010

Darker −20%#6A000B

Darker −30%#370006

Darker −40%#040000

More saturated +25%#D00015

Less saturated −25%#B61A2A

Channel breakdown

R208

B21

Red208 (81.6%)

Green0 (0%)

Blue21 (8.2%)

Hue353.94°

Saturation (HSL)100%

Lightness40.78%

Dominant channelRed

Hex per channelR D0 · G 00 · B 15

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

1d15

The roll

Counting the outcomes

Probability of each total

Chance of rolling at least

Keep nerding

The same dice, different counts

The same count, different dice

#D00015 (colour)

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else