Chalkboard
Open in tool →Slate green with chalk cream and a coral — nostalgic without being twee.
Color
#a1b899
#a1b899
hex
#a1b899rgb
rgb(161, 184, 153)hsl
hsl(105, 18%, 66%)oklch
oklch(0.757 0.05 137.6)Closest name: Norway (#a4b88f)Relative luminance 0.4416
Colors that go with #a1b899
Charcoal, Lilac and Blue 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #a1b899: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Lilac #c8a2c8
complementaryshippedLilac sits directly opposite #a1b899 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped5 real palettes, including Lexus's brand system and League of Legends's brand system put Blue beside #a1b899, as the supporting colour.
Champagne #f7e7ce
shipped5 real palettes, including Bramble and Forest Floor put Champagne beside #a1b899, as that palette's text colour.
Copper #b87333
shippedDesigners have shipped Copper with #a1b899: 6 real palettes, including Clean Beauty and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with #a1b899 in 4 real palettes, including Cartier's brand system and Tiffany & Co.'s brand system, as the accent.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #a1b899 in 4 real palettes, including Olive Grove and Forest Floor, as the lead colour.
Eggplant #614051
shippedEggplant shows up next to #a1b899 in 4 real palettes, including Bramble and Sepia Mono, as the lead colour.
Real palettes that use #a1b899
Tints & shades
Harmonies
Contrast
| #a1b899 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.14:1 | fail | fail | fail | |
Aaon black | 9.83:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a1b899 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
mcpConnect your agent — build around #a1b899
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #a1b899 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/a1b899-a6bea2-754edf-1f2d22-eff1e9?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md