#39353b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	12.02:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.75:1	fail	fail	fail	AA: use #7a727e as the text (4.54:1) AAA: use #9b949e as the text (7.12:1) 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 #39353b as the background.

Brands using this color

Mercuryprimary · #323341 · Δ1.874

Fonts for this mood

#39353b reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

Neutral fonts →Luxury fonts →Bold fonts →

mcpConnect your agent — build around #39353b

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 #39353b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/39353b-a2beb0-c859d4-1f2d2b-eaf1e9?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