Color

#37157a

#37157a
hex#37157a
rgbrgb(55, 21, 122)
hslhsl(260, 71%, 28%)
oklchoklch(0.321 0.155 289.9)
Closest name: Explorer of the Galaxies (#3a1f76)Relative luminance 0.0275

Colors that go with #37157a

Royal Blue, Charcoal and Crimson 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 →

#587a15

#15267a · #69157a

#7a3715 · #157a37

Split-complementary

Open in tool →

#7a6915 · #267a15

#7a1526 · #587a15 · #157a69

Contrast

#37157a as textRatioAAAA largeAAAFix
Aaon white
13.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.55:1failfailfail
  • AA: use #8759e3 as the text (4.57:1)
  • AAA: use #a785ea as the text (7.19:1)
  • AA: or shift the background to #969696 (4.58:1)
  • AAA: or shift the background to #bdbdbd (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37157a 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

#37157a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37157a
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 #37157a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37157a-ae9cc4-dfc94e-2a1f2d-e9ebf1?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