Color

#373d72

#373d72
hex#373d72
rgbrgb(55, 61, 114)
hslhsl(234, 35%, 33%)
oklchoklch(0.382 0.09 276.4)
Closest name: Evening Magic (#363e7d)Relative luminance 0.0536

Colors that go with #373d72

Steel Blue, Blue and Crimson 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 →

#726c37

#375a72 · #4e3772

#72373d · #3d7237

Split-complementary

Open in tool →

#724e37 · #5a7237

#72375a · #726c37 · #37724e

Contrast

#373d72 as textRatioAAAA largeAAAFix
Aaon white
10.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.07:1failfailfail
  • AA: use #686fb6 as the text (4.54:1)
  • AAA: use #8d93c8 as the text (7.14:1)
  • AA: or shift the background to #adadad (4.51:1)
  • AAA: or shift the background to #d9d9d9 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #373d72 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

#373d72 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #373d72
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 #373d72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/373d72-9d9cc4-df8a4e-241f2d-e9eef1?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