Color

#1c2a3f

#1c2a3f
hex#1c2a3f
rgbrgb(28, 42, 63)
hslhsl(216, 38%, 18%)
oklchoklch(0.283 0.043 258.3)
Closest name: Eternal Darkness (#1c2841)Relative luminance 0.0226

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3f311c

#1c3c3f · #201c3f

#3f1c2a · #2a3f1c

Split-complementary

Open in tool →

#3f201c · #3c3f1c

#3f1c3c · #3f311c · #1c3f20

Contrast

#1c2a3f as textRatioAAAA largeAAAFix
Aaon white
14.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #4f76b0 as the text (4.55:1)
  • AAA: use #7997c3 as the text (7.03:1)
  • AA: or shift the background to #919191 (4.59:1)
  • AAA: or shift the background to #b5b5b5 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1c2a3f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#1c2a3f reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1c2a3f
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 #1c2a3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1c2a3f-9ca7c4-df5f4e-201f2d-e9f0f1?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