Color

#2d4858

#2d4858
hex#2d4858
rgbrgb(45, 72, 88)
hslhsl(202, 32%, 26%)
oklchoklch(0.387 0.043 235.4)
Closest name: Charcoal (#36454f)Relative luminance 0.059

Colors that go with #2d4858

Steel Blue, Teal and Sienna lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#583d2d

#2d5852 · #2d3358

#582d48 · #48582d

Split-complementary

Open in tool →

#582d33 · #58522d

#522d58 · #583d2d · #33582d

Contrast

#2d4858 as textRatioAAAA largeAAAFix
Aaon white
9.64:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #4c7a94 as the text (4.52:1)
  • AAA: use #6e9bb4 as the text (7.01:1)
  • AA: or shift the background to #b3b3b3 (4.6:1)
  • AAA: or shift the background to #dedede (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d4858 as the background.

Brands using this color

Fonts for this mood

#2d4858 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d4858
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2d4858 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d4858-9cb1c4-df4e5f-1f222d-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