Color

#252837

#252837
hex#252837
rgbrgb(37, 40, 55)
hslhsl(230, 20%, 18%)
oklchoklch(0.281 0.028 275.7)
Closest name: Midnight Express (#21263a)Relative luminance 0.0219

Tints & shades

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

Harmonies

Complementary

Open in tool →

#373425

#253137 · #2b2537

#372528 · #283725

Split-complementary

Open in tool →

#372b25 · #313725

#372531 · #373425 · #25372b

Contrast

#252837 as textRatioAAAA largeAAAFix
Aaon white
14.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.44:1failfailfail
  • AA: use #6c749d as the text (4.62:1)
  • AAA: use #8e94b4 as the text (7.05:1)
  • AA: or shift the background to #8f8f8f (4.52:1)
  • AAA: or shift the background to #b5b5b5 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #252837 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#252837 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #252837
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 #252837 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/252837-9c9ec4-df814e-231f2d-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