Color

#451a4d

#451a4d
hex#451a4d
rgbrgb(69, 26, 77)
hslhsl(291, 50%, 20%)
oklchoklch(0.306 0.099 321.1)
Closest name: Velvet Cosmos (#441144)Relative luminance 0.0254

Colors that go with #451a4d

Charcoal, Sea Green and Amber 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 →

#214d1a

#2b1a4d · #4d1a3b

#4d451a · #1a4d45

Split-complementary

Open in tool →

#3b4d1a · #1a4d2b

#4d2b1a · #214d1a · #1a3b4d

Contrast

#451a4d as textRatioAAAA largeAAAFix
Aaon white
13.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #af47c2 as the text (4.5:1)
  • AAA: use #c579d2 as the text (7.04:1)
  • AA: or shift the background to #949494 (4.59:1)
  • AAA: or shift the background to #b8b8b8 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #451a4d 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

#451a4d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #451a4d
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 #451a4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/451a4d-bf9fc1-a4cb62-2d1f29-ece9f1?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