Color

#5a59ab

#5a59ab
hex#5a59ab
rgbrgb(90, 89, 171)
hslhsl(241, 33%, 51%)
oklchoklch(0.506 0.127 281.4)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1226

Colors that go with #5a59ab

Charcoal, Amber and 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 →

#aaab59

#5981ab · #8359ab

#ab5a59 · #59ab5a

Split-complementary

Open in tool →

#ab8359 · #81ab59

#ab5981 · #aaab59 · #59ab83

Contrast

#5a59ab as textRatioAAAA largeAAAFix
Aaon white
6.08:1passpassfail
  • AAA: use #504f9c as the text (7.14:1)
Aaon black
3.45:1failpassfail
  • AA: use #6e6db6 as the text (4.53:1)
  • AAA: use #9392c8 as the text (7.19:1)
  • AA: or shift the background to #dedede (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5a59ab as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #5a59ab
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 #5a59ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5a59ab-a19cc4-df9b4e-261f2d-e9edf1?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