Color

#43a2ef

#43a2ef
hex#43a2ef
rgbrgb(67, 162, 239)
hslhsl(207, 84%, 60%)
oklchoklch(0.691 0.144 246.5)
Closest name: Cerulean (#55aaee)Relative luminance 0.3327

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef9043

#43efe6 · #434cef

#ef43a2 · #a2ef43

Split-complementary

Open in tool →

#ef434c · #efe643

#e643ef · #ef9043 · #4cef43

Contrast

#43a2ef as textRatioAAAA largeAAAFix
Aaon white
2.74:1failfailfail
  • AA: use #1277ca as the text (4.65:1)
  • AAA: use #0d5b9b as the text (7.03:1)
  • AA: or shift the background to #333333 (4.6:1)
  • AAA: or shift the background to #0d0d0d (7.08:1)
Aaon black
7.65:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #43a2ef 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

#43a2ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #43a2ef
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 #43a2ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/43a2ef-9cadc4-df4e53-1f212d-e9f1f1?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