# #ff543d

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

## Values

- Hex: `#ff543d`
- RGB: rgb(255, 84, 61)
- HSL: hsl(7, 100%, 62%)
- OKLCH: oklch(0.678 0.211 30.8)
- Relative luminance: 0.2794
- Nearest named color: tomato (#ff6347, Δ 2.435) — https://brandsweets.com/colors/tomato
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ff543d

## Tints & shades

- Tints (toward white): #ff6652, #ff7361, #ff8575, #ff9385, #ffa599, #ffb7ad, #ffc4bd, #ffd6d1, #ffe4e0, #fff6f5
- Shades (toward black): #ff391f, #ff1e00, #e61b00, #c71700, #a81400, #8a1000, #6b0c00, #520a00, #330600, #140200

## Harmonies

- Complementary: #3de8ff
- Analogous: #ff3d87, #ffb53d
- Triadic: #3dff54, #543dff
- Split-complementary: #3dffb5, #3d87ff
- Tetradic: #87ff3d, #3de8ff, #b53dff

## Colors that go with #ff543d

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 #ff543d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Tumblr (https://brandsweets.com/colors/brands/tumblr-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Audi (https://brandsweets.com/colors/brands/audi-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Light Sea Green** #20b2aa [harmony, pool: complementary] — Light Sea Green sits directly opposite #ff543d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/lightseagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #ff543d in 7 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 Monzo's brand system and Readymag's brand system put Blue beside #ff543d, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Glossier (https://brandsweets.com/colors/brands/glossier-com), Doordash (https://brandsweets.com/colors/brands/doordash-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #ff543d: 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), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #ff543d in 9 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), Snyk (https://brandsweets.com/colors/brands/snyk-io), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #ff543d: 14 real palettes, including Strava's brand system and Soundcloud's brand system, as the accent. Seen in: Strava (https://brandsweets.com/colors/brands/strava-com), Soundcloud (https://brandsweets.com/colors/brands/soundcloud-com), PlanetScale (https://brandsweets.com/colors/brands/planetscale-com), Postman (https://brandsweets.com/colors/brands/postman-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #ff543d: 8 real palettes, including Heatwave and Readymag's brand system, as the accent. Seen in: Heatwave (https://brandsweets.com/palettes/warm#heatwave), Readymag (https://brandsweets.com/colors/brands/readymag-com), Figma (https://brandsweets.com/colors/brands/figma), Databricks (https://brandsweets.com/colors/brands/databricks-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 3.19:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #e61b00 (4.64:1); AA: background → #292929 (4.56:1); AAA: text → #ad1400 (7.3:1)
- On black (#000000): 6.59:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #ff614d (7.07:1)

## Brands using this color

- **Monzo** — secondary #ff4f40 (Δ 0.925) — https://brandsweets.com/colors/brands/monzo-com
- **Tumblr** — accent #ff4930 (Δ 1.644) — https://brandsweets.com/colors/brands/tumblr-com

## 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/ff543d-c4a59c-62cba4-2d271f-f1e9ec?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: "#ff543d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.