Heatwave
Open in tool →Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest.
Color
#188bf7
#188bf7
hex
#188bf7rgb
rgb(24, 139, 247)hsl
hsl(209, 93%, 53%)oklch
oklch(0.635 0.187 253)Closest name: dodgerblue (#1e90ff)Relative luminance 0.2537
Colors that go with #188bf7
Charcoal, Crimson and Amber 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 #188bf7: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #188bf7 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #188bf7 in 10 real palettes, including Heatwave and Walmart's brand system, as the supporting colour.
Blue #0000ff
shipped12 real palettes, including Unity's brand system and Readymag's brand system put Blue beside #188bf7, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #188bf7: 8 real palettes, including Carrefour's brand system and Behance's brand system, as the accent.
Dark Orange #ff8c00
shippedDark Orange shows up next to #188bf7 in 4 real palettes, including Playground and Elastic's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #188bf7: 8 real palettes, including Patreon's brand system and Figma's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #188bf7: 15 real palettes, including Coursera's brand system and Apple's brand system, as the accent.
Real palettes that use #188bf7
Tints & shades
Harmonies
Contrast
| #188bf7 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.46:1 | fail | pass | fail | |
Aaon black | 6.07:1 | 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 #188bf7 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#188bf7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #188bf7
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 #188bf7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/188bf7-9cacc4-df4e4e-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