Color

#351bb6

#351bb6
hex#351bb6
rgbrgb(53, 27, 182)
hslhsl(250, 74%, 41%)
oklchoklch(0.391 0.219 276.8)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0492

Colors that go with #351bb6

Charcoal, Steel Blue and Cornflower Blue 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 →

#9cb61b

#1b4fb6 · #821bb6

#b6351b · #1bb635

Split-complementary

Open in tool →

#b6821b · #4fb61b

#b61b4f · #9cb61b · #1bb682

Contrast

#351bb6 as textRatioAAAA largeAAAFix
Aaon white
10.59:1passpasspassPasses AAA — no fix needed.
Aaon black
1.98:1failfailfail
  • AA: use #765fe7 as the text (4.56:1)
  • AAA: use #9887ed as the text (7.02:1)
  • AA: or shift the background to #ababab (4.61:1)
  • AAA: or shift the background to #d4d4d4 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #351bb6 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#351bb6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #351bb6
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 #351bb6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/351bb6-a79cc4-dfb14e-281f2d-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