Color
#51ccd2
#51ccd2rgb(81, 204, 210)hsl(183, 59%, 57%)oklch(0.779 0.108 199.7)Colors that go with #51ccd2
Charcoal, Light Coral 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 #51ccd2: softer than #000 and cool enough to feel like part of the same palette.
Light Coral #f08080
complementaryshippedLight Coral sits directly opposite #51ccd2 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped4 real palettes, including Canva's brand system and Uber's brand system put Blue beside #51ccd2, as the accent.
Crimson #dc143c
shippedCrimson is paired with #51ccd2 in 4 real palettes, including Riot Games's brand system and Tiffany & Co.'s brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #51ccd2: 4 real palettes, including UEFA's brand system and Coca-Cola's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #51ccd2: 5 real palettes, including Patreon's brand system and Opensea's brand system, as the accent.
Midnight Blue #191970
shipped4 real palettes, including Telehealth and Confluent's brand system put Midnight Blue beside #51ccd2, as the text colour against it.
Royal Blue #4169e1
shippedRoyal Blue is paired with #51ccd2 in 7 real palettes, including Docker's brand system and Telehealth, as the supporting colour.
Real palettes that use #51ccd2
Tints & shades
Harmonies
Contrast
| #51ccd2 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.92:1 | fail | fail | fail | |
Aaon black | 10.92:1 | 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 #51ccd2 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
#51ccd2 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 #51ccd2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51ccd2-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