Color

#3810ea

#3810ea
hex#3810ea
rgbrgb(56, 16, 234)
hslhsl(251, 87%, 49%)
oklchoklch(0.448 0.278 273.1)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0715

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c2ea10

#1055ea · #a510ea

#ea3810 · #10ea38

Split-complementary

Open in tool →

#eaa510 · #55ea10

#ea1055 · #c2ea10 · #10eaa5

Contrast

#3810ea as textRatioAAAA largeAAAFix
Aaon white
8.64:1passpasspassPasses AAA — no fix needed.
Aaon black
2.43:1failfailfail
  • AA: use #795df4 as the text (4.69:1)
  • AAA: use #9c88f7 as the text (7.28:1)
  • AA: or shift the background to #bdbdbd (4.6:1)
  • AAA: or shift the background to #e8e8e8 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3810ea 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

#3810ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3810ea
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 #3810ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3810ea-a89cc4-dfb34e-281f2d-e9ecf1?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