Playground
Open in tool →Orange, blue and green — the colors of playground equipment; loud, cheerful, obviously for kids.
Color
#2183f2
#2183f2
hex
#2183f2rgb
rgb(33, 131, 242)hsl
hsl(212, 89%, 54%)oklch
oklch(0.616 0.188 255.4)Closest name: Azure (#007fff)Relative luminance 0.2297
Colors that go with #2183f2
Copper, Amber and Crimson 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.
Copper #b87333
complementaryshippedCopper sits directly opposite #2183f2 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #2183f2 in 4 real palettes, including Heatwave and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
triadicshippedCrimson completes a triad with #2183f2 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #2183f2 in 4 real palettes, including Calm's brand system and Blueprint, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #2183f2 in 4 real palettes, including Heatwave and PlanetScale's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #2183f2: softer than #000 and cool enough to feel like part of the same palette.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #2183f2 in 3 real palettes, including Console Light and Telehealth, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #2183f2 in 3 real palettes, including Telehealth and Blue Mono, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #2183f2
Tints & shades
Harmonies
Contrast
| #2183f2 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.75:1 | fail | pass | fail | |
Aaon black | 5.59:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2183f2 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#2183f2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #2183f2
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 #2183f2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/2183f2-9caac4-df564e-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