Color

#340dab

#340dab
hex#340dab
rgbrgb(52, 13, 171)
hslhsl(255, 86%, 36%)
oklchoklch(0.367 0.215 278.6)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0396

Tints & shades

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

Harmonies

Complementary

Open in tool →

#83ab0d

#0d34ab · #830dab

#ab340d · #0dab34

Split-complementary

Open in tool →

#ab830d · #34ab0d

#ab0d34 · #83ab0d · #0dab83

Contrast

#340dab as textRatioAAAA largeAAAFix
Aaon white
11.72:1passpasspassPasses AAA — no fix needed.
Aaon black
1.79:1failfailfail
  • AA: use #7f59f3 as the text (4.63:1)
  • AAA: use #a084f6 as the text (7.13:1)
  • AA: or shift the background to #a1a1a1 (4.54:1)
  • AAA: or shift the background to #c9c9c9 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #340dab 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

#340dab reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #340dab
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #340dab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/340dab-ab9cc4-dfbd4e-291f2d-e9ebf1?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