Color

#3129bc

#3129bc
hex#3129bc
rgbrgb(49, 41, 188)
hslhsl(243, 64%, 45%)
oklchoklch(0.411 0.216 273.7)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0587

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b5bc29

#296bbc · #7a29bc

#bc3129 · #29bc31

Split-complementary

Open in tool →

#bc7a29 · #6bbc29

#bc296b · #b5bc29 · #29bc7a

Contrast

#3129bc as textRatioAAAA largeAAAFix
Aaon white
9.66:1passpasspassPasses AAA — no fix needed.
Aaon black
2.17:1failfailfail
  • AA: use #6e68de as the text (4.7:1)
  • AAA: use #928ee6 as the text (7.23:1)
  • AA: or shift the background to #b3b3b3 (4.61:1)
  • AAA: or shift the background to #dedede (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3129bc 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

#3129bc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3129bc
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 #3129bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3129bc-a39cc4-dfa04e-261f2d-e9edf1?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