Color

#2a4151

#2a4151
hex#2a4151
rgbrgb(42, 65, 81)
hslhsl(205, 32%, 24%)
oklchoklch(0.363 0.04 239.6)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0487

Tints & shades

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

Harmonies

Complementary

Open in tool →

#513a2a

#2a514e · #2a2d51

#512a40 · #40512a

Split-complementary

Open in tool →

#512a2d · #514e2a

#4e2a51 · #513a2a · #2d512a

Contrast

#2a4151 as textRatioAAAA largeAAAFix
Aaon white
10.64:1passpasspassPasses AAA — no fix needed.
Aaon black
1.97:1failfailfail
  • AA: use #4e7997 as the text (4.51:1)
  • AAA: use #729ab6 as the text (7.01:1)
  • AA: or shift the background to #ababab (4.63:1)
  • AAA: or shift the background to #d4d4d4 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a4151 as the background.

Brands using this color

Fonts for this mood

#2a4151 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a4151
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 #2a4151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a4151-9cafc4-df4e58-1f212d-e9f1f0?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