Color

#2f505b

#2f505b
hex#2f505b
rgbrgb(47, 80, 91)
hslhsl(195, 32%, 27%)
oklchoklch(0.411 0.043 221.2)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.071

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5b3a2f

#2f5b50 · #2f3a5b

#5b2f50 · #505b2f

Split-complementary

Open in tool →

#5b2f3a · #5b502f

#502f5b · #5b3a2f · #3a5b2f

Contrast

#2f505b as textRatioAAAA largeAAAFix
Aaon white
8.68:1passpasspassPasses AAA — no fix needed.
Aaon black
2.42:1failfailfail
  • AA: use #497c8d as the text (4.55:1)
  • AAA: use #689fb1 as the text (7.18:1)
  • AA: or shift the background to #bdbdbd (4.62:1)
  • AAA: or shift the background to #e8e8e8 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f505b 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

#2f505b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f505b
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 #2f505b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f505b-9cb5c4-df4e70-1f242d-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