What color is

a thundercloud

Slate gray 78% · Charcoal 75% · Ink black 59%

What color is a thundercloud? Asked about 63 colors one at a time, Jev said “a thundercloud” is most likely Slate gray (78%), followed by Charcoal (75%) and Ink black (59%). It answered yes to 4 of the 63. In character it reads as dim, cool, explosive and melancholic.

Jev's answer

We asked Jev 63 yes-or-no questions: does this color belong to “a thundercloud”? These are the probabilities it answered yes. It said yes to 4.

  1. Slate gray78%
  2. Charcoal75%
  3. Ink black59%
  4. Midnight55%
  5. Navy46%
  6. Steel blue45%
  7. Cobalt34%
  8. Indigo34%
  9. Electric blue27%
  10. Silver24%
All 63 colors
  1. Aubergine21%
  2. Cornflower18%
  3. Chocolate17%
  4. Sky blue17%
  5. Powder blue16%
  6. Plum16%
  7. Amethyst15%
  8. Snow white14%
  9. Ice blue14%
  10. Taupe13%
  11. Violet13%
  12. Sepia12%
  13. Moss12%
  14. Forest green11%
  15. Teal11%
  16. Lilac11%
  17. Crimson10%
  18. Emerald10%
  19. Mauve10%
  20. Neon purple10%
  21. Blood red9.0%
  22. Scarlet9.0%
  23. Amber9.0%
  24. Rust9.0%
  25. Caramel9.0%
  26. Olive9.0%
  27. Aqua9.0%
  28. Bone white8.0%
  29. Tangerine8.0%
  30. Copper8.0%
  31. Gold8.0%
  32. Mustard8.0%
  33. Grass green8.0%
  34. Turquoise8.0%
  35. Lavender8.0%
  36. Sand7.0%
  37. Coral7.0%
  38. Dusty rose7.0%
  39. Magenta7.0%
  40. Terracotta7.0%
  41. Sage7.0%
  42. Cream6.0%
  43. Salmon6.0%
  44. Blush6.0%
  45. Lemon6.0%
  46. Sunflower6.0%
  47. Butter yellow6.0%
  48. Mint6.0%
  49. Hot pink5.0%
  50. Peach5.0%
  51. Neon green5.0%
  52. Lime5.0%
  53. Bubblegum pink4.0%
Signature

One color for “a thundercloud”: a perceptual blend of Jev's leading answers.

Character

Four more questions, each answered as a probability over five levels.

Light0.9/4
darkbright
Warmth1.0/4
coldhot
Energy3.6/4
stillwild
Mood0.8/4
somberjoyful

A Thundercloud color palette

Feels like

thunderstormSlate gray 72%worrySlate gray 47%uneaseSlate gray 54%sharkSlate gray 41%monday morningSlate gray 39%grumpinessSlate gray 53%

More nature & weather

All nature & weather →
thunderstormSlate gray 72%fogSlate gray 64%rainSlate gray 64%drizzleSlate gray 60%a cliffSlate gray 51%an overcast skySlate gray 81%an earthquakeSlate gray 31%a tornadoCharcoal 39%a caveCharcoal 64%morning dewSilver 53%moonlightSilver 80%a fjordIce blue 72%

Browse the atlas

Emotions149 wordsPersonality60 wordsNature & Weather102 wordsSeasons & Time40 wordsHolidays & Celebrations50 wordsCountries102 wordsCities113 wordsAesthetics & Styles84 wordsEras & Decades30 wordsFood & Drink191 wordsAnimals125 wordsFlowers & Plants68 wordsGems & Materials76 wordsMusic & Sound87 wordsBig Ideas128 wordsEveryday Moments129 wordsMyth & Fantasy83 wordsSpace44 wordsZodiac & Mystic75 wordsNames137 wordsLetters & Numbers39 wordsSports & Games50 wordsJobs82 wordsUntranslatable Words45 wordsTech & Internet72 wordsSenses55 words

How it works

  1. You type a phrase. A word, a feeling, a place, a memory — anything up to 60 characters, in any language.
  2. Jev answers 67 questions at once. Jev is a “System One” model from TypeSafe AI. It doesn't write sentences; it returns calibrated probabilities. For each of 63 named colors it tells us how likely that color belongs to your phrase, and it rates the phrase on light, warmth, energy and mood.
  3. We paint the probabilities. The strongest colors get the most room; the motion follows the energy score; the text flips dark on bright fields. Every number on the page is Jev's raw answer. Nothing is hand-picked.