Color

#370d4e

#370d4e
hex#370d4e
rgbrgb(55, 13, 78)
hslhsl(279, 71%, 18%)
oklchoklch(0.269 0.113 310.2)
Closest name: Romanic Scene (#3b0346)Relative luminance 0.0165

Tints & shades

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

Harmonies

Complementary

Open in tool →

#244e0d

#170d4e · #4e0d45

#4e380d · #0d4e38

Split-complementary

Open in tool →

#454e0d · #0d4e17

#4e170d · #244e0d · #0d454e

Contrast

#370d4e as textRatioAAAA largeAAAFix
Aaon white
15.79:1passpasspassPasses AAA — no fix needed.
Aaon black
1.33:1failfailfail
  • AA: use #a943df as the text (4.56:1)
  • AAA: use #c178e8 as the text (7.12:1)
  • AA: or shift the background to #8a8a8a (4.57:1)
  • AAA: or shift the background to #adadad (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #370d4e 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

#370d4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #370d4e
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 #370d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/370d4e-b99fc1-b9cb62-2d1f2c-ebe9f1?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