Dark Color

#10143C

Descriptive Name: Midnight Obsidian

Closest CSS Named Color: MidnightBlue (#191970)

Color Space Coordinates

Copyable codes for development, CSS styling, and print

HEX#10143C
RGBrgb(16, 20, 60)
HSLhsl(235, 58%, 15%)
HSV / HSBhsv(235, 73.3%, 23.5%)
CMYK (Print)cmyk(73%, 67%, 0%, 76%)
OKLCH (CSS4)oklch(0.216 0.076 273.8)
OKLaboklab(0.216 0.005 -0.076)
Tailwind CSSbg-[#10143C]

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)17.69:1
White Text on #10143C
AA Normal Text
AAA Normal Text
Against Pure Black (#000000)1.19:1
Black Text on #10143C
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 #10143C (Midnight Obsidian)

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 #10143C

Primary Buttons & Focus Rings

With an RGB luminance of 16, 20, 60, this shade works excellently with white text (#FFFFFF) for call-to-action buttons and form focus states.

Background Containers

To use #10143C as a card background or subtle surface tint, apply an opacity of 5% to 15% (bg-[#10143C]/10 in Tailwind) to maintain high typography readability.

Data Visualization & Badges

Pair with its complementary accent #3C3910 or triadic partner #3C1014 to distinguish distinct categories in charts and tables.

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Tools & Utilities for #10143C

Explore gradients, test contrast ratios, and generate monochromatic shades with #10143C

All Tools →

Related Educational Guides

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

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