Recognised as Decimal number
3,090
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 3 s.f.
3,090 is a decimal number equal to 3,090⁄1. It lies between 3,090 and 3,090, and as a percentage it is 309,000%.
Number properties
Fractions & ratios
Arithmetic
Representations
Decimal3,090
Scientific notation3.09 × 10^3
Exponential3.09e+3
IEEE 754 binary64 (hex)0x40A8240000000000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x4541200032-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written3counted from the digits as typed, not from the value
To 0 decimal places3090
To 1 decimal place3090.0
To 2 decimal places3090.00
To 3 decimal places3090.000
To 4 decimal places3090.0000
To 1 significant figure3e+3
To 2 significant figures3.1e+3
To 3 significant figures3.09e+3
To 4 significant figures3090
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Also reads as
#0309E1 (colour)
- #0309E1
- Blue
- Dark
- Nearest: Medium blue
#0309E1 is a blue with RGB values 3, 9, 225 and HSL 238°, 97%, 45%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.
Colour values
#0309E1#0309E1
HEX#0309E1
RGBrgb(3, 9, 225)
RGB (0–1)0.0118, 0.0353, 0.8824
RGB percentages1.2%, 3.5%, 88.2%
HSLhsl(238.4, 97.4%, 44.7%)
HSV / HSBhsv(238.4, 98.7%, 88.2%)
CMYK98.7%, 96%, 0%, 11.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer199,137
CSS custom property--colour: #0309E1;
Brightness & contrast
Relative luminance0.05651WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.86:1
Contrast with white9.86:1WCAG normal text: AAA
Contrast with black2.13:1WCAG normal text: Fail
Greyscale equivalent#171717
Inverted#FCF61E
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.86:1WCAG large text: AAA
Contrast with black, large text2.13:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#E1DB03
Analogous#0378E1, #6C03E1
Triadic#E10309, #09E103
Split complementary#E16C03, #78E103
Tetradic#E10378, #E1DB03, #03E16C
Tints, shades & saturation
Channel breakdown
R3
G9
B225
Red3 (1.2%)
Green9 (3.5%)
Blue225 (88.2%)
Hue238.38°
Saturation (HSL)97.37%
Lightness44.71%
Dominant channelBlue
Hex per channelR 03 · G 09 · B E1
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Harmonies
Similar named colours
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