Color

#5a57b2

#5a57b2
hex#5a57b2
rgbrgb(90, 87, 178)
hslhsl(242, 37%, 52%)
oklchoklch(0.506 0.14 281.6)
Closest name: Bellflower (#5d66aa)Relative luminance 0.122

Colors that go with #5a57b2

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 →

#afb257

#5782b2 · #8857b2

#b25a57 · #57b25a

Split-complementary

Open in tool →

#b28857 · #82b257

#b25782 · #afb257 · #57b288

Contrast

#5a57b2 as textRatioAAAA largeAAAFix
Aaon white
6.1:1passpassfail
  • AAA: use #504da8 as the text (7.08:1)
Aaon black
3.44:1failpassfail
  • AA: use #6f6cbc as the text (4.55:1)
  • AAA: use #918fcc as the text (7:1)
  • AA: or shift the background to #dedede (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5a57b2 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

#5a57b2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5a57b2
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 #5a57b2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5a57b2-a29cc4-df9e4e-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