Nine independent inputs. Ten settings for each. Choose a recipe, run a sample, and use what you learn to improve the next one. The target stays hidden until the end, and each challenge uses a newly chosen target that differs from the starting mix.
Start the challenge. Tap a dot to set one input, or drag across channels to draw a recipe. Higher on the chart means a higher level.
Keyboard: focus the chart, use ←/→ to choose an input, then ↑/↓ to change its level. Press Enter to run the sample.
Start the challenge, then tap a dot or drag across channels to make a recipe.
The target was kept out of view while you chose your experiments.
— CIEDE2000 color difference
Optimization is the process of choosing what to try next, learning from the result, and using that information to make a better decision.
Color difference uses an approximate CIE Lab calculation under a D65-like illuminant. Pigment spectra are synthetic and educational, not calibrated measurements.
Scores are calculated from completed challenges. Usernames are public and not verified, so please don’t use personal or sensitive information.
Want to appear on the leaderboard? Choose a public username. No account needed.
Use 1–24 English letters, numbers, spaces, periods, underscores, or hyphens. Returning players can enter the same username to update their best score.
Last updated: 10 October 2026
Opsight helps research teams explore what to test next. When you visit our website or start a conversation with us, we aim to be equally clear about what happens to your personal information.
This policy explains what we collect through our public website and inquiries, why we use it and the choices available to you. It does not cover information processed within the Opsight application or datasets shared for a pilot or study. Those activities will be covered by separate information and agreements, as appropriate.
When you submit an inquiry, we collect your first and last name, email address and a description of your challenge or use case. You may also provide your role or job title and organization, and tell us whether you are requesting a demo, discussing a pilot or exploring a retrospective study. If you are interested in a retrospective study, you may provide a short description of an existing dataset.
If you contact us by email or continue a discussion with our team, we keep the relevant correspondence and any additional information you choose to provide.
You do not need to create an account or upload a dataset to make an inquiry. Fields marked as required are needed to respond meaningfully; other fields are optional.
Please do not include confidential datasets, sensitive personal information or unpublished technical details in the inquiry form. If a discussion progresses, we will agree an appropriate way to share further information.
We use inquiry information to respond to you, understand your needs and assess whether there may be a useful fit with Opsight. This may include arranging a demo, discussing a pilot, retrospective evaluation or research collaboration, and managing related follow-up.
Where applicable, we also use relevant information to operate and secure the website, manage our records, meet legal obligations and establish or defend legal claims.
Making an inquiry does not subscribe you to marketing emails. If we offer an optional subscription, its purpose and choices will be explained separately when you sign up.
Our main basis for handling inquiries is our legitimate interest in responding to people who approach us and managing potential business or research relationships. We consider the purpose of the processing, its necessity and the impact on your rights and interests.
Where applicable, we may instead process information to take steps at your request before entering into a contract, or to perform a contract with you. We may also process information to comply with legal obligations.
Where an activity requires consent, we will request it separately. You can withdraw that consent at any time; this does not affect the lawfulness of processing carried out before withdrawal.
We keep personal information only for as long as it is needed for the purposes described in this policy, taking account of any continuing relationship and applicable legal requirements.
If an inquiry develops into a pilot, study or other agreement, relevant records may need to be retained under the arrangements for that relationship. We will delete or anonymize information when it is no longer needed, subject to any necessary legal retention.
You are welcome to contact us with any concern about how we handle your information. You also have the right to request deletion of information or restriction of its use.
Our website may link to research publications, event pages or other external websites. Those sites have their own privacy practices, which are not covered by this policy.
We may update this policy when our website or information-handling practices change. The latest version will appear here with its publication date. Where required, we will bring material changes to your attention.