Color

#40a2d4

#40a2d4
hex#40a2d4
rgbrgb(64, 162, 212)
hslhsl(200, 63%, 54%)
oklchoklch(0.676 0.116 234.6)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3168

Colors that go with #40a2d4

Charcoal, Bronze 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d47140

#40d4bb · #4058d4

#d440a2 · #a2d440

Split-complementary

Open in tool →

#d44058 · #d4bb40

#bb40d4 · #d47140 · #58d440

Contrast

#40a2d4 as textRatioAAAA largeAAAFix
Aaon white
2.86:1failfailfail
  • AA: use #267ba6 as the text (4.7:1)
  • AAA: use #1c5d7d as the text (7.21:1)
  • AA: or shift the background to #303030 (4.61:1)
  • AAA: or shift the background to #050505 (7.12:1)
Aaon black
7.34:1passpasspassPasses 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 #40a2d4 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

#40a2d4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40a2d4
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 #40a2d4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40a2d4-9cb2c4-df4e64-1f232d-e9f1f0?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