Color

#351fff

#351fff
hex#351fff
rgbrgb(53, 31, 255)
hslhsl(246, 100%, 56%)
oklchoklch(0.481 0.294 270.8)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0896

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e9ff1f

#1f78ff · #a51fff

#ff351f · #1fff35

Split-complementary

Open in tool →

#ffa51f · #78ff1f

#ff1f78 · #e9ff1f · #1fffa5

Contrast

#351fff as textRatioAAAA largeAAAFix
Aaon white
7.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.79:1failfailfail
  • AA: use #6c5cff as the text (4.61:1)
  • AAA: use #9185ff as the text (7:1)
  • AA: or shift the background to #c9c9c9 (4.54:1)
  • AAA: or shift the background to #f7f7f7 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #351fff as the background.

Brands using this color

Fonts for this mood

#351fff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #351fff
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 #351fff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/351fff-a59cc4-dfa74e-271f2d-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