Decimal number
401
- Positive
- Decimal
- 0 d.p.
- Exact fraction
401 is a decimal number equal to 401⁄1. It lies between 401 and 401, and as a percentage it is 40,100%.
Number properties
Fractions & ratios
Arithmetic
Representations
Decimal401
Scientific notation4.01 × 10^2
Exponential4.01e+2
IEEE 754 binary64 (hex)0x4079100000000000the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x43C8800032-bit single precision, may lose accuracy
Rounding
To 0 decimal places401
To 1 decimal place401.0
To 2 decimal places401.00
To 3 decimal places401.000
To 4 decimal places401.0000
To 1 significant figure400
To 2 significant figures400
To 3 significant figures401
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Also reads as
#401E00 (colour)
- #401E00
- Orange
- Dark
- Nearest: Saddle brown
#401E00 is a orange with RGB values 64, 30, 0 and HSL 28°, 100%, 13%. It is a dark colour, so white text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.
Colour values
#401E00#401E00
HEX#401E00
RGBrgb(64, 30, 0)
RGB (0–1)0.251, 0.1176, 0
RGB percentages25.1%, 11.8%, 0%
HSLhsl(28.1, 100%, 12.5%)
HSV / HSBhsv(28.1, 100%, 25.1%)
CMYK0%, 53.1%, 100%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,201,984
CSS custom property--colour: #401E00;
Brightness & contrast
Relative luminance0.02019WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.96:1
Contrast with white14.96:1WCAG normal text: AAA
Contrast with black1.4:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#BFE1FF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.96:1WCAG large text: AAA
Contrast with black, large text1.4:1WCAG large text: Fail
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#002240
Analogous#400002, #403E00
Triadic#00401E, #1E0040
Split complementary#00403E, #000240
Tetradic#024000, #002240, #3E0040
Tints, shades & saturation
Channel breakdown
R64
G30
B0
Red64 (25.1%)
Green30 (11.8%)
Blue0 (0%)
Hue28.13°
Saturation (HSL)100%
Lightness12.55%
Dominant channelRed
Hex per channelR 40 · G 1E · B 00
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