#3F6366

Q: What are the RGB, HSL, and CMYK values of #3F6366?

RGB(63, 99, 102), HSL(184.6, 23.6%, 32.4%), CMYK(38.2%, 2.9%, 0.0%, 60.0%).

Q: Does #3F6366 meet WCAG contrast on white?

6.59:1 — WCAG AA pass, AAA fail for normal text.

Overview

#3F6366 is a cool, dark color. In RGB it is 63, 99, 102, in HSL 184.6°, 23.6%, 32.4%, and in CMYK 38.2%, 2.9%, 0.0%, 60.0%. The nearest named color is darkslategrey.

On this page

カラー値

HEX

#3F6366

RGB

63, 99, 102

HSL

184.6, 23.6%, 32.4%

HSV

184.6, 38.2%, 40.0%

CMYK

38.2%, 2.9%, 0.0%, 60.0%

OKLCH

0.4737 0.0415 202.5

プロパティ

寒色暗い最も近い： darkslategrey

色彩心理学

Dark cyans and deep aquas convey depth, reliability, and technical mastery. They carry the trustworthiness of blue with a modern, slightly warmer edge from their green component. These tones suggest specialized expertise and sophisticated engineering.

Design Usage

Dark cyan works for cybersecurity brands, developer platforms, and data infrastructure companies. It creates striking dark-mode accents and terminal-style interfaces that feel technical yet approachable. Pair it with lighter cyan highlights and neutral grays for a layered, depth-rich design system.