Color

#28535c

#28535c
hex#28535c
rgbrgb(40, 83, 92)
hslhsl(190, 39%, 26%)
oklchoklch(0.415 0.05 213)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0741

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5c3128

#285c4b · #283a5c

#5c2854 · #545c28

Split-complementary

Open in tool →

#5c283a · #5c4b28

#4b285c · #5c3128 · #3a5c28

Contrast

#28535c as textRatioAAAA largeAAAFix
Aaon white
8.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #3e818e as the text (4.74:1)
  • AAA: use #4ea1b1 as the text (7.06:1)
  • AA: or shift the background to #bdbdbd (4.5:1)
  • AAA: or shift the background to #ebebeb (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28535c 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

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

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

tool url/palettes/new/28535c-a2b6be-df4e7c-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