Color

#123b2a

#123b2a
hex#123b2a
rgbrgb(18, 59, 42)
hslhsl(155, 53%, 15%)
oklchoklch(0.318 0.055 162.9)
Closest name: Queen of Trees (#1c401f)Relative luminance 0.0342

Colors that go with #123b2a

Crimson, Sea Green 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 →

#3b1223

#123b15 · #12373b

#2a123b · #3b2a12

Split-complementary

Open in tool →

#3b1237 · #3b1512

#15123b · #3b1223 · #373b12

Contrast

#123b2a as textRatioAAAA largeAAAFix
Aaon white
12.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.68:1failfailfail
  • AA: use #29855e as the text (4.61:1)
  • AAA: use #34a877 as the text (7.01:1)
  • AA: or shift the background to #9c9c9c (4.54:1)
  • AAA: or shift the background to #c4c4c4 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #123b2a as the background.

Brands using this color

Fonts for this mood

#123b2a reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #123b2a
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 #123b2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/123b2a-a2beb6-d459c8-1f2d2d-e9f1ea?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