Glossy Slate Gray
A near-neutral, cool medium blue.
#818F9D
rgb(129, 143, 157)
Color formats
HEX
#818F9D
RGB
rgb(129, 143, 157)
HSL
hsl(210, 12.5%, 56.1%)
HSV
hsv(210, 17.8%, 61.6%)
CMYK
cmyk(17.8%, 8.9%, 0%, 38.4%)
Color shades
Lighter tints and darker shades of Glossy Slate Gray.
Lightest
#F4F5F6
Lighter
#BAC2CA
Base
#818F9D
Darker
#515C68
Darkest
#24292E
Complementary
The opposite hue on the color wheel.
Analogous
Neighbouring hues that harmonise.
Contrast & readability
Where Glossy Slate Gray works
Glossy Slate Gray (#818F9D) is a near-neutral, cool medium blue. Its mid-range lightness makes it a flexible choice for buttons, fills and accents that need to read clearly without overpowering a layout. The low saturation keeps it calm and easy to pair, so it sits comfortably next to almost any accent color.
Observe the spectrum
More colors related to Glossy Slate Gray — or browse all grays.
Color tools
Color Format Converter
Convert any color between HEX, RGB, HSL, HSV, CMYK and OKLCH instantly — and copy ready-to-paste CSS, SCSS or Tailwind.
Color Picker
Pick any color visually and copy accurate HEX, RGB, HSL and CMYK codes — no signup.
Palette Generator
Generate harmonious color palettes from any base color — complementary, analogous, triadic and more, with instant CSS export.
Contrast Checker
Test color contrast against WCAG 2.1 AA/AAA — live pass/fail, font-size rules, and a real component preview.
Shade & Tint Generator
Generate 10–12 step tints and shades from any color — perfect 50–950 UI ramps with CSS and Tailwind export.
Complementary Color Finder
Find the perfect complementary (180° opposite) color for any shade, with HEX/RGB/HSL and contrast info.