Color

#43d8ef

#43d8ef
hex#43d8ef
rgbrgb(67, 216, 239)
hslhsl(188, 84%, 60%)
oklchoklch(0.815 0.125 210.1)
Closest name: Hammam Blue (#65dcd6)Relative luminance 0.5654

Colors that go with #43d8ef

Charcoal, Dodger Blue and Taupe lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef5a43

#43efb0 · #4382ef

#ef43d8 · #d8ef43

Split-complementary

Open in tool →

#ef4382 · #efb043

#b043ef · #ef5a43 · #82ef43

Contrast

#43d8ef as textRatioAAAA largeAAAFix
Aaon white
1.71:1failfailfail
  • AA: use #0d8091 as the text (4.65:1)
  • AAA: use #095f6c as the text (7.33:1)
  • AA: or shift the background to #525252 (4.58:1)
  • AAA: or shift the background to #363636 (7.08:1)
Aaon black
12.31:1passpasspassPasses 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 #43d8ef as the background.

Brands using this color

Fonts for this mood

#43d8ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #43d8ef
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #43d8ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/43d8ef-a2b7be-df4e81-1f252d-e9f1ee?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