Color

#40a3ce

#40a3ce
hex#40a3ce
rgbrgb(64, 163, 206)
hslhsl(198, 59%, 53%)
oklchoklch(0.676 0.11 230.4)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3174

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ce6b40

#40ceb2 · #405dce

#ce40a3 · #a3ce40

Split-complementary

Open in tool →

#ce405d · #ceb240

#b240ce · #ce6b40 · #5dce40

Contrast

#40a3ce as textRatioAAAA largeAAAFix
Aaon white
2.86:1failfailfail
  • AA: use #2a7ea2 as the text (4.56:1)
  • AAA: use #1f5f7a as the text (7.06:1)
  • AA: or shift the background to #303030 (4.62:1)
  • AAA: or shift the background to #080808 (7.01:1)
Aaon black
7.35:1passpasspassPasses 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 #40a3ce 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

#40a3ce reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40a3ce
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 #40a3ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40a3ce-9cb3c4-df4e69-1f232d-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