Color

#357bb1

#357bb1
hex#357bb1
rgbrgb(53, 123, 177)
hslhsl(206, 54%, 45%)
oklchoklch(0.563 0.109 244.9)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.181

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b16a35

#35b1a8 · #353db1

#b1357b · #7bb135

Split-complementary

Open in tool →

#b1353d · #b1a835

#a835b1 · #b16a35 · #3db135

Contrast

#357bb1 as textRatioAAAA largeAAAFix
Aaon white
4.55:1passpassfail
  • AAA: use #275a82 as the text (7.31:1)
Aaon black
4.62:1passpassfail
  • AAA: use #5a9cce as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #357bb1 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

#357bb1 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #357bb1
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 #357bb1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/357bb1-9caec4-df4e56-1f212d-e9f1f1?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