#1b131a as text	Ratio	AA	AA large	AAA	Fix
Aaon white	18.19:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.15:1	fail	fail	fail	AA: use #92688d as the text (4.59:1) AAA: use #ac8ba8 as the text (7.01:1) AA: or shift the background to #808080 (4.6:1) AAA: or shift the background to #a1a1a1 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b131a as the background.

Brands using this color

Palettes built around it

171717 737373 c2410c ffffff

Gallery

Open in tool →

Near-monochrome with one burnt-orange highlight — an art director's default because it never competes with the work.

Editorial Minimal Light

2563eb 52525b 16a34a fafafa 18181b

Console Light

Open in tool →

A sober docs palette: one blue for interactive, one green for success, zinc greys for everything else.

Technical Clean Light

a1a1aa 71717a f59e0b 18181b f4f4f5

Graphite

Open in tool →

A greyscale system with a single amber — the accent does all the work, so allow one per screen.

Technical Muted Dark Modern

Fonts for this mood

#1b131a reads as warm, muted, dark. The font library is tagged with the same vocabulary:

Warm fonts →Editorial fonts →Elegant fonts →Luxury fonts →Bold fonts →

mcpConnect your agent — build around #1b131a

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 #1b131a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b131a-c19fb8-87cb62-2d1f25-eee9f1?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