Laser
Open in tool →Laser green, violet and cyan — the synthwave/gaming set; keep the type near-white and let one neon own each screen.
Color
#04defb
#04defb
hex
#04defbrgb
rgb(4, 222, 251)hsl
hsl(187, 97%, 50%)oklch
oklch(0.826 0.143 211.4)Closest name: Aqua (#0ff0fe)Relative luminance 0.5923
Colors that go with #04defb
Charcoal, Dodger Blue and Taupe 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 #04defb: softer than #000 and cool enough to feel like part of the same palette.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #04defb: 4 real palettes, including Patreon's brand system and Opensea's brand system, as the accent.
Taupe #483c32
shippedTaupe is paired with #04defb in 8 real palettes, including Boeing's brand system and Crayon Box, as the text colour against it.
Salmon #fa8072
complementarySalmon sits directly opposite #04defb on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Dark Orange #ff8c00
split-complementshippedDark Orange is a split-complement of #04defb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #04defb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #04defb in 3 real palettes, including Riot Games's brand system and Formula 1's brand system, as the supporting colour.
Khaki #f0e68c
shipped3 real palettes, including Pastel Pop and Nursery put Khaki beside #04defb, as the accent.
Real palettes that use #04defb
Tints & shades
Harmonies
Contrast
| #04defb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.63:1 | fail | fail | fail | |
Aaon black | 12.85:1 | 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 #04defb as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#04defb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #04defb
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 #04defb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/04defb-a2b8be-df4e83-1f262d-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