Color
#51aeb3
#51aeb3rgb(81, 174, 179)hsl(183, 39%, 51%)oklch(0.697 0.088 200.1)Colors that go with #51aeb3
Charcoal, Dark Olive Green and Denim 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 #51aeb3: softer than #000 and cool enough to feel like part of the same palette.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #51aeb3 in 5 real palettes, including Undergrowth and Oatmeal, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #51aeb3: 6 real palettes, including Open House and Coca-Cola's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #51aeb3: 5 real palettes, including Unity's brand system and Patreon's brand system, as the lead colour.
Midnight Blue #191970
shipped9 real palettes, including Ford's brand system and Confluent's brand system put Midnight Blue beside #51aeb3, as the lead colour.
Orange #ffa500
shipped4 real palettes, including Graphite and Mint Modern put Orange beside #51aeb3, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #51aeb3: 5 real palettes, including First Snow and Crypto.com's brand system, as the accent.
Light Coral #f08080
complementaryLight Coral sits directly opposite #51aeb3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #51aeb3
Tints & shades
Harmonies
Contrast
| #51aeb3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.61:1 | fail | fail | fail | |
Aaon black | 8.06:1 | 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 #51aeb3 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
#51aeb3 reads as cool, modern. 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 #51aeb3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51aeb3-a2b9be-d4598e-1f262d-e9f1ee?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