Recognised as Colour
#FF5913
- #FF5913
- Orange
- Dark
- Nearest: Orange red
#FF5913 is a orange with RGB values 255, 89, 19 and HSL 18°, 100%, 54%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#FF5913#FF5913
HEX#FF5913
RGBrgb(255, 89, 19)
RGB (0–1)1, 0.349, 0.0745
RGB percentages100%, 34.9%, 7.5%
HSLhsl(17.8, 100%, 53.7%)
HSV / HSBhsv(17.8, 92.5%, 100%)
CMYK0%, 65.1%, 92.5%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,734,483
CSS custom property--colour: #FF5913;
Brightness & contrast
Relative luminance0.28452WCAG 2.x, 0 is black and 1 is white
Perceived brightness155.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.69:1
Contrast with white3.14:1WCAG normal text: Fail
Contrast with black6.69:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#00A6EC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.14:1WCAG large text: AA
Contrast with black, large text6.69:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#13B9FF
Analogous#FF1343, #FFCF13
Triadic#13FF59, #5913FF
Split complementary#13FFCF, #1343FF
Tetradic#43FF13, #13B9FF, #CF13FF
Tints, shades & saturation
Channel breakdown
R255
G89
B19
Red255 (100%)
Green89 (34.9%)
Blue19 (7.5%)
Hue17.8°
Saturation (HSL)100%
Lightness53.73%
Dominant channelRed
Hex per channelR FF · G 59 · B 13
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Also reads as
FF5913 (chemical formula)
- Formula
- 112,354.172 g/mol
- 5914 atoms
FF5913 has a molar mass of 112,354.172 g/mol, made up of 5914 atoms across 1 element: 5914 × F.
Molar mass
Molar mass112,354.172 g/mol
Total atoms per molecule5914
Distinct elements1
Mass of one molecule1.8656849 × 10^-19 g
Molecules per gram5.3599619 × 10^18
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
F100%
Fluorine (F × 5914)112,354.172 g/mol, 100%
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