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Decimal number

308

  • Positive
  • Decimal
  • 0 d.p.
  • Exact fraction

308 is a decimal number equal to 308⁄1. It lies between 308 and 308, and as a percentage it is 30,800%.

Number properties

Absolute value308
SignPositive
Integer part308
Fractional part0
Decimal places0
Floor308
Ceiling308
Rounded to nearest308
Truncated308

Fractions & ratios

As a fraction308/1exact
Ratio308 : 1
As a percentage30,800%
Reciprocal0.0032467532≈

Arithmetic

Double616
Half154
Square94,864
Cube29,218,112
Square root17.5499287748≈
Cube root6.7533134167≈
Negation-308
Natural logarithm5.730099783≈
Logarithm base 102.4885507165≈

Representations

Decimal308
Scientific notation3.08 × 10^2
Exponential3.08e+2
IEEE 754 binary64 (hex)0x4073400000000000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x439A000032-bit single precision, may lose accuracy

Rounding

To 0 decimal places308
To 1 decimal place308.0
To 2 decimal places308.00
To 3 decimal places308.000
To 4 decimal places308.0000
To 1 significant figure300
To 2 significant figures310
To 3 significant figures308

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Neighbouring values

As a fraction

Also reads as

#308E00 (colour)

  • #308E00
  • Green
  • Dark
  • Nearest: Green

#308E00 is a green with RGB values 48, 142, 0 and HSL 100°, 100%, 28%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Green.

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Colour values

#308E00#308E00
HEX#308E00
RGBrgb(48, 142, 0)
RGB (0–1)0.1882, 0.5569, 0
RGB percentages18.8%, 55.7%, 0%
HSLhsl(99.7, 100%, 27.8%)
HSV / HSBhsv(99.7, 100%, 55.7%)
CMYK66.2%, 0%, 100%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,182,080
CSS custom property--colour: #308E00;

Brightness & contrast

Relative luminance0.19974WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.99:1
Contrast with white4.2:1WCAG normal text: Fail
Contrast with black4.99:1WCAG normal text: AA
Greyscale equivalent#707070
Inverted#CF71FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#928000no red cones; affects about 1% of men; ΔE 45.1 from the original
Deuteranopia#87791Bno green cones; the most common form, about 1% of men; ΔE 44.6 from the original
Tritanopia#228978no blue cones; rare, and affects men and women equally; ΔE 56.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.2:1WCAG large text: AA
Contrast with black, large text4.99:1WCAG large text: AAA

Named colours

Green · ΔE 7.7Forest green · ΔE 9.7Dark green · ΔE 21.1Olivedrab · ΔE 22Limegreen · ΔE 28.1Yellow green · ΔE 29.7
Nearest named CSS colourGreen (#008000)ΔE 7.69, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E008E
Analogous#778E00, #008E17
Triadic#00308E, #8E0030
Split complementary#17008E, #8E0077
Tetradic#00778E, #5E008E, #8E1700

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#92FF5B
Lighter +30%#71FF28
Lighter +20%#52F400
Lighter +10%#41C100
Darker −10%#1F5B00
Darker −20%#0E2800
Darker −30%#000000
Darker −40%#000000
More saturated +25%#308E00
Less saturated −25%#367C12

Channel breakdown

R48
G142
B0
Red48 (18.8%)
Green142 (55.7%)
Blue0 (0%)
Hue99.72°
Saturation (HSL)100%
Lightness27.84%
Dominant channelGreen
Hex per channelR 30 · G 8E · B 00

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Every value on this page was computed from “308e00” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.