Color

#25535b

#25535b
hex#25535b
rgbrgb(37, 83, 91)
hslhsl(189, 42%, 25%)
oklchoklch(0.414 0.052 210.4)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0734

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5b2d25

#255b48 · #25385b

#5b2552 · #525b25

Split-complementary

Open in tool →

#5b2538 · #5b4825

#48255b · #5b2d25 · #385b25

Contrast

#25535b as textRatioAAAA largeAAAFix
Aaon white
8.51:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #3a818d as the text (4.7:1)
  • AAA: use #48a2b1 as the text (7.08:1)
  • AA: or shift the background to #bdbdbd (4.53:1)
  • AAA: or shift the background to #ebebeb (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #25535b 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

#25535b reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #25535b
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 #25535b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/25535b-a2b7be-df4e7e-1f252d-e9f1ee?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