Color

#252c37

#252c37
hex#252c37
rgbrgb(37, 44, 55)
hslhsl(217, 20%, 18%)
oklchoklch(0.291 0.022 259.4)
Closest name: Night Sky (#292b31)Relative luminance 0.0247

Tints & shades

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

Harmonies

Complementary

Open in tool →

#373025

#253537 · #272537

#37252c · #2c3725

Split-complementary

Open in tool →

#372725 · #353725

#372535 · #373025 · #253727

Contrast

#252c37 as textRatioAAAA largeAAAFix
Aaon white
14.06:1passpasspassPasses AAA — no fix needed.
Aaon black
1.49:1failfailfail
  • AA: use #647796 as the text (4.62:1)
  • AAA: use #8897af as the text (7.09:1)
  • AA: or shift the background to #949494 (4.63:1)
  • AAA: or shift the background to #b8b8b8 (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 #252c37 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#252c37 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #252c37
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 #252c37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/252c37-9ca7c4-df624e-201f2d-e9f0f1?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