Color

#631986

#631986
hex#631986
rgbrgb(99, 25, 134)
hslhsl(281, 69%, 31%)
oklchoklch(0.392 0.171 311.7)
Closest name: Extraviolet (#661188)Relative luminance 0.0507

Colors that go with #631986

Forest Green, Charcoal and Sea Green 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 →

#3b8619

#2d1986 · #861972

#866319 · #198663

Split-complementary

Open in tool →

#728619 · #19862d

#862d19 · #3b8619 · #197286

Contrast

#631986 as textRatioAAAA largeAAAFix
Aaon white
10.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #ab41dc as the text (4.52:1)
  • AAA: use #c479e6 as the text (7.22:1)
  • AA: or shift the background to #ababab (4.54:1)
  • AAA: or shift the background to #d4d4d4 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #631986 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

#631986 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #631986
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 #631986 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/631986-ba9fc1-b6cb62-2d1f2c-ebe9f1?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