Color

#2a37ef

#2a37ef
hex#2a37ef
rgbrgb(42, 55, 239)
hslhsl(236, 86%, 55%)
oklchoklch(0.481 0.264 268.5)
Closest name: C64 Blue (#003aff)Relative luminance 0.0946

Tints & shades

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

Harmonies

Complementary

Open in tool →

#efe22a

#2a99ef · #7f2aef

#ef2a37 · #37ef2a

Split-complementary

Open in tool →

#ef7f2a · #99ef2a

#ef2a99 · #efe22a · #2aef7f

Contrast

#2a37ef as textRatioAAAA largeAAAFix
Aaon white
7.26:1passpasspassPasses AAA — no fix needed.
Aaon black
2.89:1failfailfail
  • AA: use #5963f3 as the text (4.5:1)
  • AAA: use #848bf6 as the text (7:1)
  • AA: or shift the background to #cccccc (4.52:1)
  • AAA: or shift the background to #fcfcfc (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a37ef 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

#2a37ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a37ef
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 #2a37ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a37ef-9e9cc4-df8f4e-241f2d-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