# #acc421

A color — vivid. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#acc421`
- RGB: rgb(172, 196, 33)
- HSL: hsl(69, 71%, 45%)
- OKLCH: oklch(0.776 0.173 118.5)
- Relative luminance: 0.4836
- Nearest named color: Aromatic Herbs (#98c945, Δ 2.716) — https://brandsweets.com/colors/aromatic-herbs
- Moods: vivid
- Page: https://brandsweets.com/colors/acc421

## Tints & shades

- Tints (toward white): #bfda25, #c7de3f, #cde255, #d3e66b, #dbea85, #e1ee9b, #e8f2b1, #eef5c6, #f6fae0, #fcfef6
- Shades (toward black): #9db31e, #8da11b, #7e9018, #6f7e15, #5f6d12, #4c570f, #3d460c, #2e3409, #1f2306, #0f1103

## Harmonies

- Complementary: #3a21c4
- Analogous: #c48b21, #5ac421
- Triadic: #21acc4, #c421ac
- Split-complementary: #215ac4, #8b21c4
- Tetradic: #21c48b, #3a21c4, #c4215a

## Colors that go with #acc421

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

- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #acc421: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Terminal (https://brandsweets.com/palettes/technical#terminal), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/cornflowerblue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #acc421 in 4 real palettes, including Citrus Grove and Learning App, as the lead colour. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [harmony, pool: triadic] — Deep Sky Blue completes a triad with #acc421 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #acc421: 4 real palettes, including Wikipedia's brand system and Open House, as the supporting colour. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Open House (https://brandsweets.com/palettes/clean#open-house), Walmart (https://brandsweets.com/colors/brands/walmart-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/denim
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #acc421: 4 real palettes, including Scale AI's brand system and Polaroid, as the supporting colour. Seen in: Scale AI (https://brandsweets.com/colors/brands/scale-com), Polaroid (https://brandsweets.com/palettes/light#polaroid), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding). — https://brandsweets.com/colors/sage-green
- **Taupe** #483c32 [pool] — Taupe is paired with #acc421 in 13 real palettes, including Citrus Grove and Acer's brand system, as the text colour against it. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Acer (https://brandsweets.com/colors/brands/acer-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/taupe
- **Plum** #dda0dd [harmony: complementary] — Plum sits directly opposite #acc421 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/plum
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #acc421: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 1.97:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6b7a15 (4.75:1); AA: background → #4a4a4a (4.5:1); AAA: text → #505c10 (7.29:1); AAA: background → #2b2b2b (7.2:1)
- On black (#000000): 10.67:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/acc421-b7bea2-4e7edf-252d1f-f1eee9?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: "#acc421" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.