Recognised as Decimal number
680
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 3 s.f.
680 is a decimal number equal to 680⁄1. It lies between 680 and 680, and as a percentage it is 68,000%.
Number properties
Fractions & ratios
Arithmetic
Representations
Decimal680
Scientific notation6.8 × 10^2
Exponential6.8e+2
IEEE 754 binary64 (hex)0x4085400000000000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x442A000032-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written3counted from the digits as typed, not from the value
To 0 decimal places680
To 1 decimal place680.0
To 2 decimal places680.00
To 3 decimal places680.000
To 4 decimal places680.0000
To 1 significant figure7e+2
To 2 significant figures6.8e+2
To 3 significant figures680
To 4 significant figures680.0
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Also reads as
#680E00 (colour)
- #680E00
- Red
- Dark
- Nearest: Maroon
#680E00 is a red with RGB values 104, 14, 0 and HSL 8°, 100%, 20%. It is a dark colour, so white text on it reaches 12.7:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#680E00#680E00
HEX#680E00
RGBrgb(104, 14, 0)
RGB (0–1)0.4078, 0.0549, 0
RGB percentages40.8%, 5.5%, 0%
HSLhsl(8.1, 100%, 20.4%)
HSV / HSBhsv(8.1, 100%, 40.8%)
CMYK0%, 86.5%, 100%, 59.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,819,328
CSS custom property--colour: #680E00;
Brightness & contrast
Relative luminance0.03257WCAG 2.x, 0 is black and 1 is white
Perceived brightness57.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.72:1
Contrast with white12.72:1WCAG normal text: AAA
Contrast with black1.65:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#97F1FF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.72:1WCAG large text: AAA
Contrast with black, large text1.65:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#005A68
Analogous#680026, #684200
Triadic#00680E, #0E0068
Split complementary#006842, #002668
Tetradic#266800, #005A68, #420068
Tints, shades & saturation
Channel breakdown
R104
G14
B0
Red104 (40.8%)
Green14 (5.5%)
Blue0 (0%)
Hue8.08°
Saturation (HSL)100%
Lightness20.39%
Dominant channelRed
Hex per channelR 68 · G 0E · B 00
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