Stars · Star
A star whose effective temperature has been measured as about 25,193 K. Explore its views, where their colours came from, and palettes you can use.
Featured palette: Calculated blackbody colour at 25,193 K (Calculated from this model)
#A5BEFF
#A5BEFFAbout Sirius B
A star whose effective temperature has been measured as about 25,193 K.
| Classification | Star |
|---|---|
| In the system of | Sirius |
| Identifiers | α Canis Majoris B |
| Spectral type | DA1.9spectral type (SIMBAD * alf CMa B; ref 2011ApJ...743..138G) · CDS, Strasbourg |
| Effective temperature | 25,193 Keffective temperature (photosphere) · MNRAS / arXiv |
| Distance | 8.70 light-years ± 0.0054 light-yearsdistance from parallax 374.49 ± 0.2313 mas (SIMBAD; ref 2020yCat.1350....0G) · CDS, Strasbourg |
Why these colours?
Calculated blackbody colour at 25,193 K
The colour a perfect blackbody at 25,193 K would have, calculated with the CIE 1931 2° observer and shown as chromaticity only, so the brightest channel is full. A real star’s spectrum has absorption lines and is not a perfect blackbody, so this is a model, not a photograph. Sirius B is a white dwarf.
From: Calculated blackbody colour at 25,193 K Calculated visible-colour 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 Sirius B.
Calculated blackbody colour at 25,193 K
Calculated from this model · Calculated blackbody colour at 25,193 K
#A5BEFFRGB 165, 190, 255region average
See where these colours came from
Creative palettes inspired by Sirius 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 Sirius B
Inspired by this object
#38466CRGB 56, 70, 108from #A5BEFF#768DCBRGB 118, 141, 203from #A5BEFF#D1DEFERGB 209, 222, 254from #A5BEFF
Colours of the first view of Sirius B with their lightness spread evenly, for a design palette.
Explore the views and the 3D model
Pick a colour from the image. Click or tap the picture to read a colour. Picked colours are yours, not catalogue samples.
Schematic sphere A plain sphere tinted with the anchor colour of the named view; it shows no surface detail and no measured shape. Objects are enlarged or scaled for inspection unless stated otherwise.
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
- Hubble Space Telescope spectroscopy of the Balmer lines in Sirius B (Barstow et al. 2005, MNRAS 362, 1134) — MNRAS / arXiv
- Stars in an Exoplanet World — NASA
- CIE 1931 2° colour-matching functions (CIE 018:2019, Table 6) — CIE
- SIMBAD astronomical database — CDS, Strasbourg
Image credits
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 0d9392e82920. No ESA, ESO or NASA endorsement is implied.