Color

#3a05fa

#3a05fa
hex#3a05fa
rgbrgb(58, 5, 250)
hslhsl(253, 96%, 50%)
oklchoklch(0.466 0.296 272.6)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0791

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c5fa05

#054afa · #b505fa

#fa3a05 · #05fa3a

Split-complementary

Open in tool →

#fab505 · #4afa05

#fa054a · #c5fa05 · #05fab5

Contrast

#3a05fa as textRatioAAAA largeAAAFix
Aaon white
8.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.58:1failfailfail
  • AA: use #7955fc as the text (4.52:1)
  • AAA: use #9d82fc as the text (7.03:1)
  • AA: or shift the background to #c2c2c2 (4.57:1)
  • AAA: or shift the background to #f0f0f0 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a05fa 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

#3a05fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a05fa
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 #3a05fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a05fa-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