Color

#374a4e

#374a4e
hex#374a4e
rgbrgb(55, 74, 78)
hslhsl(190, 17%, 26%)
oklchoklch(0.395 0.025 212)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0626

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e3b37

#374e46 · #373f4e

#4e374a · #4a4e37

Split-complementary

Open in tool →

#4e373f · #4e4637

#46374e · #4e3b37 · #3f4e37

Contrast

#374a4e as textRatioAAAA largeAAAFix
Aaon white
9.33:1passpasspassPasses AAA — no fix needed.
Aaon black
2.25:1failfailfail
  • AA: use #5b7a80 as the text (4.54:1)
  • AAA: use #7c9ca2 as the text (7.13:1)
  • AA: or shift the background to #b5b5b5 (4.55:1)
  • AAA: or shift the background to #e0e0e0 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374a4e 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

#374a4e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374a4e
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 #374a4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374a4e-a2b6be-df4e7c-1f252d-e9f1ef?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