#638E6A
Approximate Color Name: Viridian
Closest CSS Color Name: DimGray (#696969)
Color Space Coordinates
Copyable codes for development, CSS styling, and print
WCAG 2.1 Contrast & Accessibility Audit
Evaluates readability standards for normal body text (4.5:1 AA / 7.0:1 AAA) and large headings (3.0:1 AA / 4.5:1 AAA)
Tonal Variations (Shades, Tints & Tones)
Calibrated step variations created by adding black (shades), white (tints), and gray (tones)
Harmonies for #638E6A (Viridian)
Classical color wheel pairings calculated from 360-degree rotational angles
Practical UI/UX Design Usage for #638E6A
Primary Buttons & Focus Rings
With an RGB luminance of 99, 142, 106, this shade works best with dark text (#0F172A) for call-to-action buttons and form focus states.
Background Containers
To use #638E6A as a card background or subtle surface tint, apply an opacity of 5% to 15% (bg-[#638E6A]/10 in Tailwind) to maintain high typography readability.
Data Visualization & Badges
Pair with its complementary accent #8D6286 or triadic partner #69628D to distinguish distinct categories in charts and tables.
Explore More Popular Colors
View All Colors Directory →Tools & Utilities for #638E6A
Explore gradients, test contrast ratios, and generate monochromatic shades with #638E6A
Related Educational Guides
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Learn why digital colors look different when printed. Explore the physics of additive RGB light versus subtractive CMYK ink and how to avoid gamut clipping.