Light Slate Gray color: #778899
The CSS keyword lightslategray (also written lightslategrey) is #778899, rgb(119, 136, 153) or hsl(210, 14%, 53%). Its codes to copy, 50–950 tint scale, harmonies and contrast on white and black.
Part of design tools.
About Light Slate Gray
Light Slate Gray is a grayish mid-tone blue. Its hue sits at 248° in OKLCH and 210° in HSL — the two wheels are spaced differently, which is why the numbers disagree.
The keyword lightslategray comes from the X Window System color list, which SVG 1.0 adopted and CSS Color Level 3 brought to every stylesheet. It can also be written lightslategrey: same value, and both spellings work in any stylesheet.
Light Slate Gray tint scale, 50 to 950
Eleven steps at fixed perceived lightness, in OKLCH, holding lightslategray’s own hue from end to end. The keyword itself falls closest to step 500 (#778899), the one outlined.
Harmonies built on Light Slate Gray
Hue angles measured in OKLCH, so every accent keeps lightslategray’s perceived lightness. Its complement is #938371, closest to the named color gray.
Complementary
Analogous
Triadic
Split-complementary
Light Slate Gray on white and on black
Black text reads better on lightslategray (5.76:1). As a text color it belongs on a dark background: on white it only reaches 3.64:1, under the 4.5:1 that body text needs, while on black it reaches 5.76:1. AA asks 4.5:1 for body text and 3:1 for large text; AAA asks 7:1.
Named colors close to Light Slate Gray
Open lightslategray in the full tools
- Open in Color Converter — convert it to any other notation.
- Open in Palette Generator — export its scale as --lightslategray-50 … --lightslategray-950 tokens.
- Open in Color Harmonies — turn the wheel and compare OKLCH with HSL.
- Open in Contrast Checker — test it against any background, with the closest passing shade.
- Open in Color System Generator — derive a light and dark token set from it.
Or browse every named color from the color converter.