# #ffb405

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

## Values

- Hex: `#ffb405`
- RGB: rgb(255, 180, 5)
- HSL: hsl(42, 100%, 51%)
- OKLCH: oklch(0.82 0.17 78.3)
- Relative luminance: 0.5391
- Nearest named color: Amber (#ffbf00, Δ 2.681) — https://brandsweets.com/colors/amber
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ffb405

## Tints & shades

- Tints (toward white): #ffbc1f, #ffc233, #ffc94d, #ffd166, #ffd980, #ffdf94, #ffe7ad, #ffeec7, #fff4db, #fffcf5
- Shades (toward black): #eba400, #d69600, #bd8400, #a37200, #8f6400, #755200, #5c4000, #422e00, #2e2000, #140e00

## Harmonies

- Complementary: #0550ff
- Analogous: #ff3705, #cdff05
- Triadic: #05ffb4, #b405ff
- Split-complementary: #05cdff, #3705ff
- Tetradic: #05ff37, #0550ff, #ff05cd

## Colors that go with #ffb405

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 #ffb405: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Campus (https://brandsweets.com/palettes/friendly#campus), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: complementary] — Deep Sky Blue sits directly opposite #ffb405 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/deepskyblue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #ffb405: 6 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the supporting colour. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #ffb405 in 8 real palettes, including McDonald's's brand system and Tequila Sunrise, as the supporting colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise), Tabloid (https://brandsweets.com/palettes/editorial#tabloid), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #ffb405 in 4 real palettes, including Farmers Market and Undergrowth, as the supporting colour. Seen in: Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Miro (https://brandsweets.com/colors/brands/miro-com), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor). — https://brandsweets.com/colors/darkolivegreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #ffb405: 11 real palettes, including Wikipedia's brand system and Warner Bros.'s brand system, as the supporting colour. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #ffb405: 7 real palettes, including Heatwave and Google's brand system, as the accent. Seen in: Heatwave (https://brandsweets.com/palettes/warm#heatwave), Google (https://brandsweets.com/colors/brands/google-com), PostHog (https://brandsweets.com/colors/brands/posthog-com), Miro (https://brandsweets.com/colors/brands/miro-com). — https://brandsweets.com/colors/dodgerblue
- **Emerald Green** #50c878 [pool] — Emerald Green is paired with #ffb405 in 4 real palettes, including Meadow and Ubereats's brand system, as the lead colour. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow), Ubereats (https://brandsweets.com/colors/brands/ubereats-com), Playground (https://brandsweets.com/palettes/bold#playground), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark). — https://brandsweets.com/colors/emerald-green

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

- On white (#ffffff): 1.78:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #996b00 (4.71:1); AA: background → #4f4f4f (4.6:1); AAA: text → #755200 (7.09:1); AAA: background → #333333 (7.09:1)
- On black (#000000): 11.78:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Mistral AI** — secondary #ffaf01 (Δ 1.182) — https://brandsweets.com/colors/brands/mistral-ai
- **Mastodon hosted on mastodon.social** — accent #ffb900 (Δ 1.228) — https://brandsweets.com/colors/brands/mastodon-social
- **Olympics** — secondary #fcb131 (Δ 1.705) — https://brandsweets.com/colors/brands/olympics-com
- **Rivian** — accent #ffac00 (Δ 1.892) — https://brandsweets.com/colors/brands/rivian-com
- **Google** — accent #fbbc05 (Δ 1.985) — https://brandsweets.com/colors/brands/google-com

## Curated palettes containing it

- **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/ffb405-c4bc9c-62b4cb-2b2d1f-f1ebe9?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: "#ffb405" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.