Color

#373d4e

#373d4e
hex#373d4e
rgbrgb(55, 61, 78)
hslhsl(224, 17%, 26%)
oklchoklch(0.362 0.031 269.7)
Closest name: After Midnight (#38393f)Relative luminance 0.047

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e4837

#37484e · #3c374e

#4e373d · #3d4e37

Split-complementary

Open in tool →

#4e3c37 · #484e37

#4e3748 · #4e4837 · #374e3c

Contrast

#373d4e as textRatioAAAA largeAAAFix
Aaon white
10.82:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #6a7595 as the text (4.59:1)
  • AAA: use #8e96af as the text (7.13:1)
  • AA: or shift the background to #a8a8a8 (4.55:1)
  • AAA: or shift the background to #d1d1d1 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #373d4e 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

#373d4e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #373d4e
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 #373d4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/373d4e-9ca2c4-df724e-221f2d-e9eff1?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