Color

#3b6997

#3b6997
hex#3b6997
rgbrgb(59, 105, 151)
hslhsl(210, 44%, 41%)
oklchoklch(0.509 0.089 250)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1327

Tints & shades

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

Harmonies

Complementary

Open in tool →

#97693b

#3b9797 · #3b3b97

#973b69 · #69973b

Split-complementary

Open in tool →

#973b3b · #97973b

#973b97 · #97693b · #3b973b

Contrast

#3b6997 as textRatioAAAA largeAAAFix
Aaon white
5.75:1passpassfail
  • AAA: use #325981 as the text (7.29:1)
Aaon black
3.65:1failpassfail
  • AA: use #4378ad as the text (4.53:1)
  • AAA: use #6c99c6 as the text (7.01:1)
  • AA: or shift the background to #e6e6e6 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b6997 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#3b6997 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b6997
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 #3b6997 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b6997-9cabc4-df514e-1f202d-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