Color

#581e8a

#581e8a
hex#581e8a
rgbrgb(88, 30, 138)
hslhsl(272, 64%, 33%)
oklchoklch(0.385 0.167 303.7)
Closest name: Intergalactic Settlement (#5b1e8b)Relative luminance 0.0484

Colors that go with #581e8a

Olive Green, Charcoal and Midnight Blue 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 →

#518a1e

#221e8a · #8a1e86

#8a581e · #1e8a58

Split-complementary

Open in tool →

#868a1e · #1e8a22

#8a221e · #518a1e · #1e868a

Contrast

#581e8a as textRatioAAAA largeAAAFix
Aaon white
10.67:1passpasspassPasses AAA — no fix needed.
Aaon black
1.97:1failfailfail
  • AA: use #9b54d9 as the text (4.66:1)
  • AAA: use #b682e3 as the text (7.29:1)
  • AA: or shift the background to #ababab (4.65:1)
  • AAA: or shift the background to #d4d4d4 (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 #581e8a 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

#581e8a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #581e8a
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 #581e8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/581e8a-b69cc4-c5cb62-2d1f2d-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