Color

#3d20fe

#3d20fe
hex#3d20fe
rgbrgb(61, 32, 254)
hslhsl(248, 99%, 56%)
oklchoklch(0.484 0.291 272.7)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0918

Colors that go with #3d20fe

Charcoal, Cobalt Blue and Crimson lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#e0fe20

#2071fe · #ac20fe

#fe3d20 · #20fe3d

Split-complementary

Open in tool →

#feac20 · #71fe20

#fe2071 · #e0fe20 · #20feac

Contrast

#3d20fe as textRatioAAAA largeAAAFix
Aaon white
7.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #725dfe as the text (4.71:1)
  • AAA: use #9585fe as the text (7.06:1)
  • AA: or shift the background to #cccccc (4.61:1)
  • AAA: or shift the background to #fafafa (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d20fe as the background.

Brands using this color

Fonts for this mood

#3d20fe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d20fe
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3d20fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d20fe-a69cc4-dfac4e-271f2d-e9ecf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md