# Read colour wheels in ManYue: establish the RGB model before opposites or mixing

Language: en
Canonical: [Read colour wheels in ManYue: establish the RGB model before opposites or mixing](<https://allluckly.cn/en/guides/manyue-rgb-colour-wheel-opposite-model-scope/>)
中文：[中文 HTML](<https://allluckly.cn/guides/manyue-rgb-colour-wheel-opposite-model-scope/>)
English: [English HTML](<https://allluckly.cn/en/guides/manyue-rgb-colour-wheel-opposite-model-scope/>)
Published: 2026-11-12T00:00:00+08:00
Modified: 2026-11-12T09:43:29+08:00
Author: Bison

Use an original six-colour diagram to check adjacency and opposition, separating ideal additive relations, screen appearance and subtractive pigments instead of transferring colour-name rules across models.

English translation of the [Chinese original](<https://allluckly.cn/guides/manyue-rgb-colour-wheel-opposite-model-scope/>), translated on 2026-11-12. Original publication dates, attribution, code and version notes are retained.

Which colour faces red on a ring depends on the model and ordering. Read a defined RGB additive wheel in ManYue using both labels and positions to check three opposite pairs. This requires no extraction, palette generation or screen calibration and treats neither comic swatches as a pigment experiment nor displays as identical measuring devices.

## Establish the model and six equal positions

Record work, edition, page, caption and legend. This example explicitly illustrates ideal RGB additive relationships, not a traditional red–yellow–blue pigment wheel. From the top clockwise, its equal sectors are red, yellow, green, cyan, blue and magenta, with centres sixty degrees apart. Give every sector a label and number as well as colour. Similar screen appearance does not make labels identical. Without a stated model or order, leave it unknown rather than impose this sequence on every coloured ring.

## Find opposition by three sector steps

On six equal sectors, opposite centres are 180 degrees apart, or three sixty-degree intervals. The pairs are red–cyan, yellow–blue and green–magenta. Each label appears once across three pairs. Red and yellow are neighbours, not opposites merely because both look bright. Page rotation preserves opposition but changes screen positions, so record sector separation rather than just red-left/cyan-right. With unequal sectors, counting three is insufficient; check angles or the diagram’s stated definition.

## Keep adjacency and opposition in separate lists

Red neighbours magenta and yellow; cyan neighbours green and blue. The ring closes, so include magenta-to-red: six colours have six undirected neighbour pairs, not five. Adjacency and opposition answer different questions. Visual contrast does not prove neighbouring positions. Trace labels around the ring back to the start without duplicating an edge. These relationships do not prescribe the most attractive palette or every reader’s preference; distinguish geometry from aesthetic opinion.

## Read channel combinations within additive assumptions

In the ideal additive illustration, red plus green light makes yellow, green plus blue makes cyan, and blue plus red makes magenta. This is light, not stirring red and green pigments. A manual channel-participation list explains the diagram’s intermediate colours but cannot recover real optical power from screen brightness. This is not numerical pixel addition; gamma-encoded screenshot values are not automatically linear light intensities. The source distinguishes models, while actual appearance depends on file colour information, device and settings, not a colour name alone.

## Opposite-colour theory is not a pigment guarantee

The red–cyan, green–magenta and blue–yellow complementary relations depend on the stipulated additive model. Ideally matched light contributions can combine to white. This does not mean arbitrary matching pigments mix to white or that two semitransparent swatches reproduce physical additive mixing. Digital compositing has its own operation and background conditions, distinct from the light experiment not performed here. Keep theoretical assumptions and unperformed experiments explicit instead of using one term to replace all physical and digital processes.

## Read the legend again before changing models

If another page specifies a pigment or printing subtractive model, start a new record rather than impose red–cyan mechanically. Traditional art wheels, CMY and CMYK should not be treated as one identical ordering. Copy its primaries, mixing meaning and sequence before deciding what can be compared. The name blue need not identify the same chromatic range. Without colour conditions, do not use screenshot samples for precise equivalence. This respects each diagram’s conventions rather than dismissing other wheels or misreporting model differences as display errors.

## Check labels, source swatches and display separately

If red appears opposite blue, check sector counting after rotation, a different source order or another model, then cropped labels. If labels and source swatches genuinely disagree, retain both locations without assuming app recolouring. A monochrome or low-saturation copy supports text and position checks, not recovery of every hue from greys. Compare an authorised original where needed and note display state before changing appearance. No system calibration is required, and a visual observation is not colorimeter testing or proof of cross-device equivalence.

## Leave and return to reconstruct labelled relations

Leave the reader and return to the whole wheel. Read the model, trace six colours back to red, and list six neighbour pairs and three opposites, checking the closing magenta–red edge. Explain why complementary light does not guarantee white pigment mixtures, and state that no real mixing or automatic colour extraction occurred. Keep diagram identity, model, order, relationship lists, display conditions and unknown colour fields. Success distinguishes adjacency, opposition, channel composition and appearance, without judging every work by one wheel or inventing app palette analysis.

## Related guides and sources

[ManYue colour cues: cross-check identity and state with shape and text](<https://allluckly.cn/en/guides/manyue-colour-cue-redundant-evidence/>); [ManYue: Check PDF page colours with a self-made reference sheet](<https://allluckly.cn/en/guides/manyue-pdf-colour-reference-check/>).

Checked on November 12, 2026: [Apple public information](<https://itunes.apple.com/lookup?id=6753895889&country=cn&entity=software&timestamp=20261112>) lists ManYue 2.0.5, requiring iOS / iPadOS 15.0 or later. See the [official App Store](<https://apps.apple.com/cn/app/id6753895889>) for published capabilities; verify specific controls in the installed version.

Method reference: [OpenStax: additive light and subtractive pigments](<https://openstax.org/books/physics/pages/15-1-the-electromagnetic-spectrum>). Samples, passages and controls are original exercises. Sources establish definitions and checking methods rather than new automatic analysis in the app. Manual records may be kept externally, and unknown fields should remain explicit. This article does not claim step-by-step testing on a physical device, private server or every output environment.