Color

#2973db

#2973db
hex#2973db
rgbrgb(41, 115, 219)
hslhsl(215, 71%, 51%)
oklchoklch(0.568 0.175 258)
Closest name: royalblue (#4169e1)Relative luminance 0.1785

Tints & shades

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

Harmonies

Complementary

Open in tool →

#db9129

#29ccdb · #3829db

#db2973 · #73db29

Split-complementary

Open in tool →

#db3829 · #ccdb29

#db29cc · #db9129 · #29db38

Contrast

#2973db as textRatioAAAA largeAAAFix
Aaon white
4.6:1passpassfail
  • AAA: use #1c55a6 as the text (7.24:1)
Aaon black
4.57:1passpassfail
  • AAA: use #6298e4 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2973db 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

#2973db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2973db
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 #2973db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2973db-9ca8c4-df5d4e-201f2d-e9f0f1?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