Recognised as Colour
#FF5204
- #FF5204
- Orange
- Dark
- Nearest: Orange red
#FF5204 is a orange with RGB values 255, 82, 4 and HSL 19°, 100%, 51%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Orange red.
Colour values
#FF5204#FF5204
HEX#FF5204
RGBrgb(255, 82, 4)
RGB (0–1)1, 0.3216, 0.0157
RGB percentages100%, 32.2%, 1.6%
HSLhsl(18.6, 100%, 50.8%)
HSV / HSBhsv(18.6, 98.4%, 100%)
CMYK0%, 67.8%, 98.4%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,732,676
CSS custom property--colour: #FF5204;
Brightness & contrast
Relative luminance0.27303WCAG 2.x, 0 is black and 1 is white
Perceived brightness152.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.46:1
Contrast with white3.25:1WCAG normal text: Fail
Contrast with black6.46:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#00ADFB
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.25:1WCAG large text: AA
Contrast with black, large text6.46:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#04B1FF
Analogous#FF0434, #FFD004
Triadic#04FF52, #5204FF
Split complementary#04FFD0, #0433FF
Tetradic#33FF04, #04B1FF, #D004FF
Tints, shades & saturation
Channel breakdown
R255
G82
B4
Red255 (100%)
Green82 (32.2%)
Blue4 (1.6%)
Hue18.65°
Saturation (HSL)100%
Lightness50.78%
Dominant channelRed
Hex per channelR FF · G 52 · B 04
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Harmonies
Similar named colours
Also reads as
FF5204 (chemical formula)
- Formula
- 98,884.59 g/mol
- 5205 atoms
FF5204 has a molar mass of 98,884.59 g/mol, made up of 5205 atoms across 1 element: 5205 × F.
Molar mass
Molar mass98,884.59 g/mol
Total atoms per molecule5205
Distinct elements1
Mass of one molecule1.6420172 × 10^-19 g
Molecules per gram6.09007 × 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 × 5205)98,884.59 g/mol, 100%
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