Clinical Report: The Colorimetric Scale for Skin of Color Offers a Standardized Way to Classify Diverse Skin Tones

Overview

The colorimetric scale for skin of color (CSSC) is a five-category visual system designed to classify skin coloration without using racial or ethnic labels. It is proposed for dermatologic and forensic assessment, but formal prospective validation and inter- and intra-rater reliability data remain outstanding.

Background

Skin-tone assessment is relevant to dermatologic evaluation and to assessing equity in healthcare algorithms, yet commonly used classification approaches have limitations for people with darker skin. The Fitzpatrick classification was developed to describe sun reactivity and was not designed to categorize patients with skin of color. The CSSC was developed in 2023 by a dermatologist and three forensic pathologists for use with living and deceased individuals. Related research has also examined the validity and reliability of subjective skin-tone scales, reflecting ongoing efforts to improve assessment methods.

Data Highlights

Key Findings

• The CSSC uses five standardized skin-color categories, from very light beige to very dark brown, and does not use racial or ethnic terminology.
• The scale was designed specifically for people with skin of color and excludes white and black categories; the original description designates white skin as type 0.
• The article describes the CSSC as rapid, simple, and inexpensive to perform, while noting that its expected reliability and reproducibility have not been formally established.
• Proposed applications include assessment of living dermatology patients and documentation of deceased individuals during forensic examination.
• The article identifies visual assessment as a limitation and states that prospective studies are needed to validate reliability and reproducibility.
• A related prospective study assessed facial images from 90 hospitalized individuals with Fitzpatrick and Monk scales, but the supplied abstract excerpt does not report its results.

Clinical Implications

The CSSC may be considered a proposed descriptive framework for skin coloration in dermatologic and forensic settings, rather than a validated measure, given the validation gaps described in the article. The source also identifies potential uses in research and clinical assessment, while stating that prospective studies are needed to establish reliability and reproducibility.

Conclusion

The CSSC offers a non-racial, non-ethnic five-category approach intended for people with skin of color. Its proposed clinical and forensic utility remains to be supported by formal reliability testing and prospective validation.

Related Resources & Content

1. Springer Nature, Dermatology and Therapy, 2026 -- The Colorimetric Scale for Skin of Color (CSSC) can Provide a Standardized Classification System for Patients with Diverse Skin Tones
2. npj Digital Medicine, 2025 -- Validity of two subjective skin tone scales and its implications on healthcare model fairness
3. npj Digital Medicine -- Assessing Skin Tone Measurement Tools for Dermatological Dataset Annotation: A Comparative Prospective Study
4. Lim et al., International Journal of Dermatology, 2026 -- International Expert Consensus on Defining Skin of Color and Delivering Equitable Dermatologic Care
5. MDSpire News — A Case for Reframing ‘Skin of Color’
6. ASCO Publications — Development of a new photonumeric scale for acute radiation dermatitis in patients with breast cancer.
7. The Colorimetric Scale for Skin of Color (CSSC) can Provide a Standardized Classification System for Patients with Diverse Skin Tones
8. Validity of two subjective skin tone scales and its implications on healthcare model fairness
9. Assessing Skin Tone Measurement Tools for Dermatological Dataset Annotation: A Comparative Prospective Study
10. International Expert Consensus on Defining Skin of Color and Delivering Equitable Dermatologic Care