Color

#252d41

#252d41
hex#252d41
rgbrgb(37, 45, 65)
hslhsl(223, 27%, 20%)
oklchoklch(0.299 0.038 267.3)
Closest name: Eternal Darkness (#1c2841)Relative luminance 0.0265

Tints & shades

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

Harmonies

Complementary

Open in tool →

#413925

#253b41 · #2b2541

#41252d · #2d4125

Split-complementary

Open in tool →

#412b25 · #3b4125

#41253b · #413925 · #25412b

Contrast

#252d41 as textRatioAAAA largeAAAFix
Aaon white
13.72:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #6476a6 as the text (4.68:1)
  • AAA: use #8796ba as the text (7.1:1)
  • AA: or shift the background to #949494 (4.52:1)
  • AAA: or shift the background to #bababa (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #252d41 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#252d41 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #252d41
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 #252d41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/252d41-9ca3c4-df704e-211f2d-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