Color
#451a51
#451a51rgb(69, 26, 81)hsl(287, 51%, 21%)oklch(0.309 0.104 318.3)Colors that go with #451a51
Charcoal, Sea Green 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 text near-black for #451a51: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #451a51 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped7 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #451a51, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #451a51: 6 real palettes, including SoFi's brand system and Open House, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #451a51: 7 real palettes, including Dusk and Clean Beauty, as the accent.
Crimson #dc143c
shippedCrimson is paired with #451a51 in 13 real palettes, including Marvel's brand system and Tim Hortons's brand system, as the accent.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #451a51 in 4 real palettes, including 7-Eleven's brand system and Oatmeal, as the supporting colour.
Real palettes that use #451a51
Tints & shades
Harmonies
Contrast
| #451a51 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 13.82:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.52:1 | 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 #451a51 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#451a51 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:
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 #451a51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/451a51-bd9fc1-abcb62-2d1f2a-ece9f1?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