Color

#233a3e

#233a3e
hex#233a3e
rgbrgb(35, 58, 62)
hslhsl(189, 28%, 19%)
oklchoklch(0.331 0.03 209.6)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0373

Colors that go with #233a3e

Amber, Blue and Blush Pink 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 →

#3e2723

#233e35 · #232c3e

#3e233a · #3a3e23

Split-complementary

Open in tool →

#3e232c · #3e3523

#35233e · #3e2723 · #2c3e23

Contrast

#233a3e as textRatioAAAA largeAAAFix
Aaon white
12.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #4b7d86 as the text (4.58:1)
  • AAA: use #669fa9 as the text (7.1:1)
  • AA: or shift the background to #a1a1a1 (4.65:1)
  • AAA: or shift the background to #c7c7c7 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #233a3e 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

#233a3e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #233a3e
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 #233a3e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/233a3e-a2b7be-df4e7e-1f252d-e9f1ee?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