Color

#39688e

#39688e
hex#39688e
rgbrgb(57, 104, 142)
hslhsl(207, 43%, 39%)
oklchoklch(0.501 0.08 244.8)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1272

Colors that go with #39688e

Charcoal, Sienna 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 →

#8e5f39

#398e8a · #393d8e

#8e3968 · #688e39

Split-complementary

Open in tool →

#8e393d · #8e8a39

#8a398e · #8e5f39 · #3d8e39

Contrast

#39688e as textRatioAAAA largeAAAFix
Aaon white
5.92:1passpassfail
  • AAA: use #315a7c as the text (7.28:1)
Aaon black
3.54:1failpassfail
  • AA: use #437aa8 as the text (4.59:1)
  • AAA: use #699bc3 as the text (7.08:1)
  • AA: or shift the background to #e3e3e3 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #39688e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#39688e reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #39688e
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 #39688e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/39688e-9cadc4-df4e53-1f212d-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