Color

#170b2d

#170b2d
hex#170b2d
rgbrgb(23, 11, 45)
hslhsl(261, 61%, 11%)
oklchoklch(0.19 0.065 295.8)
Closest name: Midnight Monarch (#1c0f33)Relative luminance 0.0061

Tints & shades

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

Harmonies

Complementary

Open in tool →

#212d0b

#0b102d · #280b2d

#2d170b · #0b2d17

Split-complementary

Open in tool →

#2d280b · #102d0b

#2d0b10 · #212d0b · #0b2d28

Contrast

#170b2d as textRatioAAAA largeAAAFix
Aaon white
18.71:1passpasspassPasses AAA — no fix needed.
Aaon black
1.12:1failfailfail
  • AA: use #895fd8 as the text (4.69:1)
  • AAA: use #a888e2 as the text (7.28:1)
  • AA: or shift the background to #7d7d7d (4.55:1)
  • AAA: or shift the background to #a1a1a1 (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #170b2d 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

#170b2d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #170b2d
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 #170b2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/170b2d-af9cc4-dfcb4e-2a1f2d-e9eaf1?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