Color

#40a2bf

#40a2bf
hex#40a2bf
rgbrgb(64, 162, 191)
hslhsl(194, 50%, 50%)
oklchoklch(0.667 0.099 220.9)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.3069

Colors that go with #40a2bf

Charcoal, Terracotta and Amber 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.

Real palettes that use #40a2bf

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf5e40

#40bf9d · #4062bf

#bf40a2 · #a2bf40

Split-complementary

Open in tool →

#bf4062 · #bf9d40

#9d40bf · #bf5e40 · #62bf40

Contrast

#40a2bf as textRatioAAAA largeAAAFix
Aaon white
2.94:1failfailfail
  • AA: use #327e95 as the text (4.61:1)
  • AAA: use #255e6f as the text (7.22:1)
  • AA: or shift the background to #2e2e2e (4.62:1)
  • AAA: or shift the background to #030303 (7.01:1)
Aaon black
7.14:1passpasspassPasses 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 #40a2bf 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

#40a2bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40a2bf
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 #40a2bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40a2bf-9cb6c4-df4e72-1f242d-e9f1ef?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