Color

#376c8b

#376c8b
hex#376c8b
rgbrgb(55, 108, 139)
hslhsl(202, 43%, 38%)
oklchoklch(0.508 0.075 236.5)
Closest name: Astral (#376f89)Relative luminance 0.134

Colors that go with #376c8b

Charcoal, Royal Blue and Sienna 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 →

#8b5637

#378b7f · #37428b

#8b376c · #6c8b37

Split-complementary

Open in tool →

#8b3742 · #8b7f37

#7f378b · #8b5637 · #428b37

Contrast

#376c8b as textRatioAAAA largeAAAFix
Aaon white
5.71:1passpassfail
Aaon black
3.68:1failpassfail
  • AA: use #407da0 as the text (4.66:1)
  • AAA: use #629ec0 as the text (7.17:1)
  • AA: or shift the background to #e6e6e6 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #376c8b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#376c8b reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #376c8b
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 #376c8b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/376c8b-9cb1c4-df4e5f-1f222d-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