Terminal
Open in tool →Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare.
Color
#45a7fc
#45a7fc
hex
#45a7fcrgb
rgb(69, 167, 252)hsl
hsl(208, 97%, 63%)oklch
oklch(0.709 0.154 248.2)Closest name: Cerulean (#55aaee)Relative luminance 0.3593
Colors that go with #45a7fc
Charcoal, Blue and Midnight 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 #45a7fc: softer than #000 and cool enough to feel like part of the same palette.
Blue #0000ff
shippedBlue is paired with #45a7fc in 4 real palettes, including Warp's brand system and Spotify's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #45a7fc in 5 real palettes, including Blue Mono and Ford's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #45a7fc in 6 real palettes, including Figma's brand system and Cursor's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #45a7fc in 4 real palettes, including NBA's brand system and Webflow's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #45a7fc in 6 real palettes, including Astro's brand system and Cursor's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Peru #cd853f
complementaryPeru sits directly opposite #45a7fc on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Goldenrod #daa520
split-complementshippedGoldenrod is a split-complement of #45a7fc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #45a7fc
Tints & shades
Harmonies
Contrast
| #45a7fc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.57:1 | fail | fail | fail | |
Aaon black | 8.19:1 | 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 #45a7fc as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#45a7fc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #45a7fc
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 #45a7fc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/45a7fc-9cadc4-df4e51-1f212d-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