Choosing a colour for a vintage bike frame restoration
Old bike frames wore their makers' own colours, not RAL. How to find the original shade, pick a RAL number a coater can use, and handle fluorescents and decals.
Read the noteChart / 5000 series / RAL 5019 Capri blue
A dark, moderately strong blue on screen. First published on this chart 26 March 2013.
This swatch is a screen approximation of the colour. Check a physical RAL fan deck or a painted sample of the actual product before you order or match anything.
| Hex (sRGB) | #1A5784 |
|---|---|
| RGB | 26, 87, 132 |
| HSL | 205°, 67%, 31% |
| CMYK (naive) | 80, 34, 0, 48 |
| CIE Lab (from sRGB) | 35.4, -2.5, -30.6 |
| Relative luminance | 8.7% |
| Text contrast | white text 7.7:1, black text 2.7:1 |
Values are derived from the approximate hex above. CMYK is a simple conversion, not a print recipe: printers convert through their own profiles. Luminance is a screen figure, not a measured light reflectance value (LRV) from a paint data sheet.
Capri blue is a deep, saturated blue with a slight green lean, falling between RAL 5005 signal blue and RAL 5009 azure blue. It reads crisp and summery.
It turns up on vehicles, bikes, doors and garden furniture. Gloss shows its depth best; use a grey primer and check a sample in daylight.
RAL 5019 capri blue is a deep, saturated blue with a slight green lean, sitting between RAL 5005 signal blue and RAL 5009 azure blue. It reads crisp and summery in sunlight and noticeably darker in shade, which is worth remembering when you choose it from a small chip.
It turns up on vehicles, bikes, front doors, garden furniture and machinery, wherever a strong blue that is not navy is wanted. On vehicles and bikes it is a popular choice for restorations and custom work. If you are matching a particular vehicle, ask the supplier about the maker's own paint code too, as automotive formulas are not always the same as a general RAL mix.
Ordering is straightforward: quote RAL 5019 and state the product type (aerosol, brush paint, 2K automotive paint or powder coat), the substrate and the gloss level. A few practical points:
Capri blue pairs well with white (RAL 9016 traffic white or RAL 9010 pure white), with light greys and with natural timber. On a front door it sits well against pale render, red brick or stone, and brass or black ironmongery both suit it.
To check a sample, paint or spray a card at least the size of a postcard over the primer you will use, then look at it outdoors on a bright day and on an overcast one. Blues shift more than most colours between direct sun and shade. Compare it with a physical fan deck rather than a screen, as monitors often render this kind of blue too purple or too green.
If the blue will sit near an existing blue, such as a matching gate and door, put the samples side by side before ordering both, because two blues that look the same alone can clash together.
Quote the number, not just the name: say "RAL Classic 5019" and add the gloss level, the product type (wall paint, metal paint, powder, aerosol) and the surface. The same number mixed by two makers, or in two gloss levels, can look slightly different, so keep a whole job in one batch and look at a sample in daylight first. The paint counter guide covers the questions to ask.
Old bike frames wore their makers' own colours, not RAL. How to find the original shade, pick a RAL number a coater can use, and handle fluorescents and decals.
Read the note