Color

#37009e

#37009e
hex#37009e
rgbrgb(55, 0, 158)
hslhsl(261, 100%, 31%)
oklchoklch(0.347 0.206 282.8)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0328

Tints & shades

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

Harmonies

Complementary

Open in tool →

#679e00

#00189e · #86009e

#9e3700 · #009e37

Split-complementary

Open in tool →

#9e8600 · #189e00

#9e0018 · #679e00 · #009e86

Contrast

#37009e as textRatioAAAA largeAAAFix
Aaon white
12.68:1passpasspassPasses AAA — no fix needed.
Aaon black
1.66:1failfailfail
  • AA: use #8b4dff as the text (4.6:1)
  • AAA: use #ac80ff as the text (7.29:1)
  • AA: or shift the background to #9c9c9c (4.62:1)
  • AAA: or shift the background to #c2c2c2 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37009e 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

#37009e reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37009e
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 #37009e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37009e-af9cc4-dfcb4e-2a1f2d-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