Color

#3107ca

#3107ca
hex#3107ca
rgbrgb(49, 7, 202)
hslhsl(253, 93%, 41%)
oklchoklch(0.401 0.25 273.9)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0507

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a0ca07

#073eca · #9307ca

#ca3107 · #07ca31

Split-complementary

Open in tool →

#ca9307 · #3eca07

#ca073e · #a0ca07 · #07ca93

Contrast

#3107ca as textRatioAAAA largeAAAFix
Aaon white
10.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #7b58f9 as the text (4.61:1)
  • AAA: use #9e84fb as the text (7.15:1)
  • AA: or shift the background to #ababab (4.54:1)
  • AAA: or shift the background to #d4d4d4 (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 #3107ca 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

#3107ca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3107ca
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 #3107ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3107ca-a99cc4-dfb84e-281f2d-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