# #10da21

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

## Values

- Hex: `#10da21`
- RGB: rgb(16, 218, 33)
- HSL: hsl(125, 86%, 46%)
- OKLCH: oklch(0.771 0.254 143.1)
- Relative luminance: 0.5036
- Nearest named color: Alarming Slime (#2ce335, Δ 2.76) — https://brandsweets.com/colors/alarming-slime
- Moods: vivid
- Page: https://brandsweets.com/colors/10da21

## Tints & shades

- Tints (toward white): #17ee29, #2eef3e, #4bf159, #62f36f, #7af584, #92f79a, #aaf9b0, #c6fbca, #defde0, #f6fef6
- Shades (toward black): #0fc71e, #0eb41b, #0c9d18, #0a8a15, #097712, #07640f, #06510c, #043909, #032606, #011303

## Harmonies

- Complementary: #da10c9
- Analogous: #64da10, #10da86
- Triadic: #2110da, #da2110
- Split-complementary: #8610da, #da1064
- Tetradic: #1064da, #da10c9, #da8610

## Colors that go with #10da21

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

- **Taupe** #483c32 [pool] — Taupe is paired with #10da21 in 8 real palettes, including WhatsApp's brand system and 7-Eleven's brand system, as the supporting colour. Seen in: WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #10da21 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/violet
- **Hot Pink** #ff69b4 [harmony, pool: split] — Hot Pink is a split-complement of #10da21: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/hotpink
- **Blue** #0000ff [pool] — 3 real palettes, including MongoDB's brand system and Minecraft's brand system put Blue beside #10da21, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #10da21 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #10da21 in 3 real palettes, including Learning App and Playground, as the accent. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/darkorange
- **Plum** #dda0dd [harmony: split] — Plum is a split-complement of #10da21: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #10da21: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 1.9:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0a8a15 (4.51:1); AA: background → #4a4a4a (4.67:1); AAA: text → #086810 (7:1); AAA: background → #2e2e2e (7.16:1)
- On black (#000000): 11.07:1 — 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/10da21-a2bea7-a54edf-1f2d26-ecf1e9?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: "#10da21" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.