Recognised as Decimal number
6,420
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 3 s.f.
6,420 is a decimal number equal to 6,420⁄1. It lies between 6,420 and 6,420, and as a percentage it is 642,000%.
Number properties
Fractions & ratios
Arithmetic
Representations
Decimal6,420
Scientific notation6.42 × 10^3
Exponential6.42e+3
IEEE 754 binary64 (hex)0x40B9140000000000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x45C8A00032-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written3counted from the digits as typed, not from the value
To 0 decimal places6420
To 1 decimal place6420.0
To 2 decimal places6420.00
To 3 decimal places6420.000
To 4 decimal places6420.0000
To 1 significant figure6e+3
To 2 significant figures6.4e+3
To 3 significant figures6.42e+3
To 4 significant figures6420
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Also reads as
#642E01 (colour)
- #642E01
- Orange
- Dark
- Nearest: Saddle brown
#642E01 is a orange with RGB values 100, 46, 1 and HSL 27°, 98%, 20%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.
Colour values
#642E01#642E01
HEX#642E01
RGBrgb(100, 46, 1)
RGB (0–1)0.3922, 0.1804, 0.0039
RGB percentages39.2%, 18%, 0.4%
HSLhsl(27.3, 98%, 19.8%)
HSV / HSBhsv(27.3, 99%, 39.2%)
CMYK0%, 54%, 99%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,565,377
CSS custom property--colour: #642E01;
Brightness & contrast
Relative luminance0.04666WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.86:1
Contrast with white10.86:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#9BD1FE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.86:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#013764
Analogous#640106, #646001
Triadic#01642E, #2E0164
Split complementary#01645F, #010664
Tetradic#066401, #013764, #5F0164
Tints, shades & saturation
Channel breakdown
R100
G46
B1
Red100 (39.2%)
Green46 (18%)
Blue1 (0.4%)
Hue27.27°
Saturation (HSL)98.02%
Lightness19.8%
Dominant channelRed
Hex per channelR 64 · G 2E · B 01
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