Color

#371a7f

#371a7f
hex#371a7f
rgbrgb(55, 26, 127)
hslhsl(257, 66%, 30%)
oklchoklch(0.331 0.156 287.7)
Closest name: Explorer of the Galaxies (#3a1f76)Relative luminance 0.0308

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#627f1a

#1a307f · #691a7f

#7f371a · #1a7f37

Split-complementary

Open in tool →

#7f691a · #307f1a

#7f1a30 · #627f1a · #1a7f69

Contrast

#371a7f as textRatioAAAA largeAAAFix
Aaon white
12.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.62:1failfailfail
  • AA: use #825ede as the text (4.61:1)
  • AAA: use #a388e7 as the text (7.23:1)
  • AA: or shift the background to #999999 (4.56:1)
  • AAA: or shift the background to #bfbfbf (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #371a7f 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

#371a7f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #371a7f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #371a7f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/371a7f-ac9cc4-dfc24e-291f2d-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