Color

#370d72

#370d72
hex#370d72
rgbrgb(55, 13, 114)
hslhsl(265, 80%, 25%)
oklchoklch(0.304 0.153 293.6)
Closest name: Galactic Federation (#330077)Relative luminance 0.0231

Tints & shades

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

Harmonies

Complementary

Open in tool →

#48730d

#0d1573 · #6a0d73

#73370d · #0d7337

Split-complementary

Open in tool →

#736a0d · #15730d

#730d15 · #48730d · #0d736a

Contrast

#370d72 as textRatioAAAA largeAAAFix
Aaon white
14.35:1passpasspassPasses AAA — no fix needed.
Aaon black
1.46:1failfailfail
  • AA: use #9151ec as the text (4.59:1)
  • AAA: use #ae7ef1 as the text (7.05:1)
  • AA: or shift the background to #919191 (4.55:1)
  • AAA: or shift the background to #b5b5b5 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #370d72 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

#370d72 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #370d72
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 #370d72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/370d72-b19cc4-dfd54e-2b1f2d-e9eaf1?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