Color

#450c73

#450c73
hex#450c73
rgbrgb(69, 12, 115)
hslhsl(273, 81%, 25%)
oklchoklch(0.323 0.156 302.7)
Closest name: indigo (#4b0082)Relative luminance 0.0277

Colors that go with #450c73

Charcoal, Crimson and Denim 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 →

#3b730c

#110c73 · #730c6e

#73450c · #0c7345

Split-complementary

Open in tool →

#6e730c · #0c7311

#73110c · #3b730c · #0c6e73

Contrast

#450c73 as textRatioAAAA largeAAAFix
Aaon white
13.52:1passpasspassPasses AAA — no fix needed.
Aaon black
1.55:1failfailfail
  • AA: use #a146ec as the text (4.6:1)
  • AAA: use #bb79f1 as the text (7.12:1)
  • AA: or shift the background to #969696 (4.57:1)
  • AAA: or shift the background to #bdbdbd (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #450c73 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

#450c73 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #450c73
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 #450c73 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/450c73-b79cc4-c4cb62-2d1f2d-eae9f1?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