Color
#43576b
#43576brgb(67, 87, 107)hsl(210, 23%, 34%)oklch(0.448 0.041 248.8)Colors that go with #43576b
Sienna, Cadet Blue and Copper 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.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #43576b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #43576b in 4 real palettes, including Dusk and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Copper #b87333
shippedCopper is paired with #43576b in 4 real palettes, including Desert Road and Dusk, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #43576b in 4 real palettes, including Codecademy's brand system and Amazon's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #43576b in 10 real palettes, including HP's brand system and The New York Times's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Goldenrod #daa520
shippedGoldenrod is paired with #43576b in 4 real palettes, including Fireside and Open House, as the accent — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #43576b in 5 real palettes, including Console Light and Undergrowth, as the accent — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #43576b: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #43576b
Tints & shades
Harmonies
Contrast
| #43576b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.46:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.81:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #43576b as the background.
Brands using this color
Point 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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #43576b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/43576b-9cabc4-df514e-1f202d-e9f1f1?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