Exoplanets · Exoplanet
A hot gas-giant exoplanet studied by Webb’s spectrographs. Explore its views, where their colours came from, and palettes you can use.
Featured palette: Artist’s concept (Sampled from this image)
#59578B#0A0A0B#8887D2#151537#625E9F#3C346F
Credit: NASA, ESA, CSA, R. Crawford (STScI). · released 15 July 2024
About WASP-39 b
A hot gas-giant exoplanet studied by Webb’s spectrographs.
| Classification | Exoplanet |
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Why these colours?
Artist’s concept
An illustration: no telescope can resolve this planet. Its colours are an artist’s choice informed by Webb’s spectra.
From: Artist’s concept Artist’s concept / illustrative model
Colour clusters describe pixels in an image; they cannot identify a mineral, a gas or a physical temperature. Shares of pixels describe the sampled region of the image, not the object’s surface.
Colours from selected views
Palettes sampled from identified images and regions, or calculated from a documented model. These values describe each image or model, not one permanent colour of WASP-39 b.
Artist’s concept
Sampled from this image · Artist’s concept
#59578BRGB 89, 87, 139region average#0A0A0BRGB 10, 10, 1178% of the region#8887D2RGB 136, 135, 2107% of the region#151537RGB 21, 21, 556% of the region#625E9FRGB 98, 94, 1594% of the region#3C346FRGB 60, 52, 1114% of the region
See where these colours came from
Creative palettes inspired by WASP-39 b
A design derived from the selected representation. It is not a scientific colour measurement. Each colour keeps the sampled colour it was made from.
Inspired by WASP-39 b
Inspired by this object
#2E2E2FRGB 46, 46, 47from #0A0A0B#50537BRGB 80, 83, 123from #151537#807BBDRGB 128, 123, 189from #3C346F#AEACF3RGB 174, 172, 243from #625E9F#E4E5FFRGB 228, 229, 255from #8887D2
Colours of the first view of WASP-39 b with their lightness spread evenly, for a design palette.
Explore the views
Pick a colour from the image. Click or tap the picture to read a colour. Picked colours are yours, not catalogue samples.
No supported 3D model is available for this view. You can still inspect the source imagery and palette.
Use these colours
Every palette above opens in the palette generator. With JavaScript you can also add colours to your cosmic palette, save them, make a gradient or pattern, preview them in a design or a room (you choose which colour goes on which surface), check digital accessibility and export them. Each colour keeps the view and sample it came from.
Paint matches compare digital swatches for design inspiration. They are not physical equivalents of light from space. Edits create a new design palette. The original representation remains unchanged.
Sources
Image credits
- Artist’s concept: NASA, ESA, CSA, R. Crawford (STScI). CC BY 4.0. Resized for the web from the publisher’s file (sha256 9bb363cc24fbc924809a2939c97f98f6e3d688bf8b3afaa519778f75b7755554).
Images were resized once for the web; colours were measured from the published files (k-means in OKLab, pcke-oklab-kmeans-1); calculated colours use the CIE 1931 2° observer. Facts last reviewed 25 October 2026. Catalogue pcke-cosmos-2026-10-25, page revision 66c371d6f80e. No ESA, ESO or NASA endorsement is implied.