Color

#3a55df

#3a55df
hex#3a55df
rgbrgb(58, 85, 223)
hslhsl(230, 72%, 55%)
oklchoklch(0.518 0.211 269)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1272

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dfc33a

#3aa8df · #713adf

#df3a55 · #55df3a

Split-complementary

Open in tool →

#df713a · #a8df3a

#df3aa8 · #dfc33a · #3adf71

Contrast

#3a55df as textRatioAAAA largeAAAFix
Aaon white
5.92:1passpassfail
Aaon black
3.54:1failpassfail
  • AA: use #546ce3 as the text (4.63:1)
  • AAA: use #8092ea as the text (7.22:1)
  • AA: or shift the background to #e3e3e3 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a55df 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

#3a55df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a55df
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 #3a55df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a55df-9c9ec4-df814e-231f2d-e9eef1?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