Color

#37454e

#37454e
hex#37454e
rgbrgb(55, 69, 78)
hslhsl(203, 17%, 26%)
oklchoklch(0.382 0.024 236.4)
Closest name: Charcoal (#36454f)Relative luminance 0.0562

Colors that go with #37454e

Blue, Blush Pink and Burlywood 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 →

#4e4037

#374e4b · #373a4e

#4e3745 · #454e37

Split-complementary

Open in tool →

#4e373a · #4e4b37

#4b374e · #4e4037 · #3a4e37

Contrast

#37454e as textRatioAAAA largeAAAFix
Aaon white
9.89:1passpasspassPasses AAA — no fix needed.
Aaon black
2.12:1failfailfail
  • AA: use #617a89 as the text (4.65:1)
  • AAA: use #859ba8 as the text (7.25:1)
  • AA: or shift the background to #b0b0b0 (4.56:1)
  • AAA: or shift the background to #d9d9d9 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #37454e 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

#37454e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #37454e
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 #37454e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/37454e-9cb0c4-df4e5d-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