# #ff5405

A color — warm, vivid, playful, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#ff5405`
- RGB: rgb(255, 84, 5)
- HSL: hsl(19, 100%, 51%)
- OKLCH: oklch(0.675 0.218 38.3)
- Relative luminance: 0.2761
- Nearest named color: orangered (#ff4500, Δ 2.179) — https://brandsweets.com/colors/orangered
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ff5405

## Tints & shades

- Tints (toward white): #ff661f, #ff7433, #ff854d, #ff9666, #ffa880, #ffb694, #ffc7ad, #ffd9c7, #ffe7db, #fff8f5
- Shades (toward black): #eb4a00, #d64400, #bd3c00, #a33400, #8f2d00, #752500, #5c1d00, #421500, #2e0f00, #140600

## Harmonies

- Complementary: #05b0ff
- Analogous: #ff0533, #ffd105
- Triadic: #05ff54, #5405ff
- Split-complementary: #05ffd1, #0533ff
- Tetradic: #33ff05, #05b0ff, #d105ff

## Colors that go with #ff5405

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #ff5405: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: HubSpot (https://brandsweets.com/colors/brands/hubspot-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com). — https://brandsweets.com/colors/charcoal
- **Dodger Blue** #1e90ff [harmony, pool: split] — Dodger Blue is a split-complement of #ff5405: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Readymag (https://brandsweets.com/colors/brands/readymag-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Figma (https://brandsweets.com/colors/brands/figma), Replit (https://brandsweets.com/colors/brands/replit). — https://brandsweets.com/colors/dodgerblue
- **Cadet Blue** #5f9ea0 [harmony, pool: complementary] — Cadet Blue sits directly opposite #ff5405 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Diner (https://brandsweets.com/palettes/vivid#diner), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Amber** #ffbf00 [pool] — Amber is paired with #ff5405 in 8 real palettes, including Heatwave and Ember, as the supporting colour. Seen in: Heatwave (https://brandsweets.com/palettes/warm#heatwave), Ember (https://brandsweets.com/palettes/bold#ember), Google (https://brandsweets.com/colors/brands/google-com), Maple (https://brandsweets.com/palettes/warm#maple). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 7 real palettes, including Readymag's brand system and Glossier's brand system put Blue beside #ff5405, as the supporting colour. Seen in: Readymag (https://brandsweets.com/colors/brands/readymag-com), Glossier (https://brandsweets.com/colors/brands/glossier-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Doordash (https://brandsweets.com/colors/brands/doordash-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #ff5405: 4 real palettes, including Tide's brand system and NASA's brand system, as the lead colour. Seen in: Tide (https://brandsweets.com/colors/brands/tide-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #ff5405 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), JBL (https://brandsweets.com/colors/brands/jbl-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #ff5405 in 8 real palettes, including Pizza Hut's brand system and Wise's brand system, as the supporting colour. Seen in: Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Wise (https://brandsweets.com/colors/brands/wise-com), Redfin (https://brandsweets.com/colors/brands/redfin-com), Snyk (https://brandsweets.com/colors/brands/snyk-io). — https://brandsweets.com/colors/crimson

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 3.22:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #d14200 (4.68:1); AA: background → #292929 (4.52:1); AAA: text → #9e3200 (7.22:1)
- On black (#000000): 6.52:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #ff621a (7.01:1)

## Brands using this color

- **Soundcloud** — secondary #ff5500 (Δ 0.22) — https://brandsweets.com/colors/brands/soundcloud-com
- **Intercom** — secondary #ff5600 (Δ 0.372) — https://brandsweets.com/colors/brands/intercom-com
- **Prepare your taste buds...** — primary #fc5404 (Δ 0.571) — https://brandsweets.com/colors/brands/grubhub-com
- **Strava** — primary #fc5404 (Δ 0.571) — https://brandsweets.com/colors/brands/strava-com
- **Substack** — primary #fc5404 (Δ 0.571) — https://brandsweets.com/colors/brands/substack-com
- **Readymag** — accent #ff5000 (Δ 0.599) — https://brandsweets.com/colors/brands/readymag-com
- **Together AI** — primary #fc4c02 (Δ 1.467) — https://brandsweets.com/colors/brands/together-ai
- **Cloudflare** — secondary #ff5e1f (Δ 1.6) — https://brandsweets.com/colors/brands/cloudflare
- **Tide** — accent #fb4c06 (Δ 1.608) — https://brandsweets.com/colors/brands/tide-com
- **HubSpot** — secondary #ff4800 (Δ 1.767) — https://brandsweets.com/colors/brands/hubspot-com

## Curated palettes containing it

- **Night Market** (neon, vivid, dark, warm) — #ff5f1f, #ff2fb3, #ffd400, #120b14, #fff1e6 — Orange, magenta and yellow neon on aubergine-black — the street-sign palette for food, nightlife and events. — tool: https://brandsweets.com/palettes/new/ff5f1f-ff2fb3-ffd400-120b14-fff1e6 — collection: https://brandsweets.com/palettes/neon
- **Heatwave** (summer, warm, bold, vivid) — #ff4d00, #ffb800, #0091ff, #fff9f0, #231205 — Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest. — tool: https://brandsweets.com/palettes/new/ff4d00-ffb800-0091ff-fff9f0-231205 — collection: https://brandsweets.com/palettes/summer

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/ff5405-c4ad9c-62cbb9-2d2a1f-f1e9eb?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#ff5405" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.