Color

#28535d

#28535d
hex#28535d
rgbrgb(40, 83, 93)
hslhsl(191, 40%, 26%)
oklchoklch(0.416 0.05 214.8)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0743

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5d3228

#285d4c · #28395d

#5d2853 · #535d28

Split-complementary

Open in tool →

#5d2839 · #5d4c28

#4c285d · #5d3228 · #395d28

Contrast

#28535d as textRatioAAAA largeAAAFix
Aaon white
8.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.49:1failfailfail
  • AA: use #3d808f as the text (4.68:1)
  • AAA: use #50a2b4 as the text (7.17:1)
  • AA: or shift the background to #bfbfbf (4.59:1)
  • AAA: or shift the background to #ebebeb (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 #28535d 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

#28535d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28535d
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 #28535d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28535d-a2b6be-df4e7a-1f252d-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