Dark Color

#63358E

Approximate Color Name: RebeccaPurple

Closest CSS Color Name: RebeccaPurple (#663399)

Color Space Coordinates

Copyable codes for development, CSS styling, and print

HEX#63358E
RGBrgb(99, 53, 142)
HSLhsl(271, 46%, 38%)
HSV / HSBhsv(271, 62.7%, 55.7%)
CMYK (Print)cmyk(30%, 63%, 0%, 44%)
OKLCH (CSS4)oklch(0.432 0.144 304.8)
OKLaboklab(0.432 0.082 -0.118)
Tailwind CSSbg-[#63358E]

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)

Against Pure White (#FFFFFF)8.64:1
White Text on #63358E
AA Normal Text
AAA Normal Text
Against Pure Black (#000000)2.43:1
Black Text on #63358E
AA Normal Text
AAA Normal Text

Tonal Variations (Shades, Tints & Tones)

Calibrated step variations created by adding black (shades), white (tints), and gray (tones)

Harmonies for #63358E (RebeccaPurple)

Classical color wheel pairings calculated from 360-degree rotational angles

Complementary (180°)

Opposite

Triadic (120° / 240°)

Equidistant

Analogous (±30°)

Adjacent

Split-Complementary (150° / 210°)

Soft Contrast

Practical UI/UX Design Usage for #63358E

Primary Buttons & Focus Rings

With an RGB luminance of 99, 53, 142, this shade works excellently with white text (#FFFFFF) for call-to-action buttons and form focus states.

Background Containers

To use #63358E as a card background or subtle surface tint, apply an opacity of 5% to 15% (bg-[#63358E]/10 in Tailwind) to maintain high typography readability.

Data Visualization & Badges

Pair with its complementary accent #5F8D34 or triadic partner #8D6234 to distinguish distinct categories in charts and tables.

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Tools & Utilities for #63358E

Explore gradients, test contrast ratios, and generate monochromatic shades with #63358E

All Tools →

Related Educational Guides

Learn how color models, web contrast standards, and conversion mathematics work

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