Recognised as Decimal number
304
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 3 s.f.
304 is a decimal number equal to 304⁄1. It lies between 304 and 304, and as a percentage it is 30,400%.
Number properties
Fractions & ratios
Arithmetic
Representations
Decimal304
Scientific notation3.04 × 10^2
Exponential3.04e+2
IEEE 754 binary64 (hex)0x4073000000000000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x4398000032-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written3counted from the digits as typed, not from the value
To 0 decimal places304
To 1 decimal place304.0
To 2 decimal places304.00
To 3 decimal places304.000
To 4 decimal places304.0000
To 1 significant figure3e+2
To 2 significant figures3e+2
To 3 significant figures304
To 4 significant figures304.0
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Also reads as
#0304E0 (colour)
- #0304E0
- Blue
- Dark
- Nearest: Medium blue
#0304E0 is a blue with RGB values 3, 4, 224 and HSL 240°, 97%, 45%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Medium blue.
Colour values
#0304E0#0304E0
HEX#0304E0
RGBrgb(3, 4, 224)
RGB (0–1)0.0118, 0.0157, 0.8784
RGB percentages1.2%, 1.6%, 87.8%
HSLhsl(239.7, 97.4%, 44.5%)
HSV / HSBhsv(239.7, 98.7%, 87.8%)
CMYK98.7%, 98.2%, 0%, 12.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer197,856
CSS custom property--colour: #0304E0;
Brightness & contrast
Relative luminance0.05488WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.01:1
Contrast with white10.01:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#FCFB1F
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.01:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#E0DF03
Analogous#0372E0, #7103E0
Triadic#E00304, #04E003
Split complementary#E07103, #72E003
Tetradic#E00372, #E0DF03, #03E071
Tints, shades & saturation
Channel breakdown
R3
G4
B224
Red3 (1.2%)
Green4 (1.6%)
Blue224 (87.8%)
Hue239.73°
Saturation (HSL)97.36%
Lightness44.51%
Dominant channelBlue
Hex per channelR 03 · G 04 · B E0
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Harmonies
Similar named colours
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