Lagoon
Open in tool →Turquoise and teal with a sand-yellow on white — shallow tropical water; the deep teal text is the reef.
Color
#45b59d
#45b59d
hex
#45b59drgb
rgb(69, 181, 157)hsl
hsl(167, 45%, 49%)oklch
oklch(0.703 0.108 176.3)Closest name: Electra (#55b492)Relative luminance 0.3675
Colors that go with #45b59d
Charcoal, Hot Pink and Dark Olive Green 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 #45b59d: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #45b59d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #45b59d in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Midnight Blue #191970
shipped7 real palettes, including Fintech Trust and Ford's brand system put Midnight Blue beside #45b59d, as the text colour against it.
Mustard Yellow #ffdb58
shipped5 real palettes, including Diner and Crayon Box put Mustard Yellow beside #45b59d, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #45b59d in 6 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent.
Slate Gray #708090
shipped4 real palettes, including Indigo SaaS and Ledger Dark put Slate Gray beside #45b59d, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #45b59d in 19 real palettes, including Resort and Polaroid, as the text colour against it.
Real palettes that use #45b59d
Tints & shades
Harmonies
Contrast
| #45b59d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.52:1 | fail | fail | fail | |
Aaon black | 8.35:1 | 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 #45b59d 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 #45b59d
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 #45b59d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/45b59d-a2bebb-d459af-1f2a2d-e9f1ec?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