Color

#6503dd

#6503dd
hex#6503dd
rgbrgb(101, 3, 221)
hslhsl(267, 97%, 44%)
oklchoklch(0.467 0.262 290.5)
Closest name: Electric Indigo (#6600ff)Relative luminance 0.0805

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7bdd03

#030edd · #d203dd

#dd6503 · #03dd65

Split-complementary

Open in tool →

#ddd203 · #0edd03

#dd030e · #7bdd03 · #03ddd2

Contrast

#6503dd as textRatioAAAA largeAAAFix
Aaon white
8.04:1passpasspassPasses AAA — no fix needed.
Aaon black
2.61:1failfailfail
  • AA: use #9745fc as the text (4.57:1)
  • AAA: use #b67cfd as the text (7.29:1)
  • AA: or shift the background to #c2c2c2 (4.52:1)
  • AAA: or shift the background to #f0f0f0 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6503dd 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

#6503dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6503dd
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 #6503dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6503dd-b39cc4-dfda4e-2c1f2d-e9eaf1?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