Color

#340f8a

#340f8a
hex#340f8a
rgbrgb(52, 15, 138)
hslhsl(258, 80%, 30%)
oklchoklch(0.329 0.178 284.6)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0291

Tints & shades

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

Harmonies

Complementary

Open in tool →

#658a0f

#0f288a · #710f8a

#8a340f · #0f8a34

Split-complementary

Open in tool →

#8a710f · #288a0f

#8a0f28 · #658a0f · #0f8a71

Contrast

#340f8a as textRatioAAAA largeAAAFix
Aaon white
13.28:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #865aed as the text (4.7:1)
  • AAA: use #a483f1 as the text (7.1:1)
  • AA: or shift the background to #999999 (4.66:1)
  • AAA: or shift the background to #bdbdbd (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #340f8a 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

#340f8a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #340f8a
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 #340f8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/340f8a-ad9cc4-dfc44e-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