#999999
#999999 is rgb(153, 153, 153), or hsl(0, 0%, 60%). The nearest reference Tailwind v4 token is neutral-400 (#a1a1a1), not an exact match.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 2.85:1 | fail | fail | fail |
| black | 7.37:1 | pass | pass | pass |
| slate-900 | 6.27:1 | pass | pass | fail |
| gray-100 | 2.59:1 | fail | fail | fail |
Ratios use WCAG relative luminance for opaque sRGB colors. Normal text requires 4.5:1, or 7:1 at AAA. Large text requires 3:1: at least 24 CSS pixels, or about 18.67 CSS pixels when bold. Pass/fail uses the unrounded ratio. Contrast alone is not a full accessibility assessment.
Colors paired with #999999 in real UI palettes
These colors appear alongside #999999 in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #111111
Used together in Monochrome.
6.63:1
AA normal text - #666666
Used together in Monochrome.
2.02:1
Not for normal text - #cccccc
Used together in Monochrome.
1.77:1
Not for normal text - #fafafa
Used together in Monochrome.
2.73:1
Not for normal text
A readable starting point
black text on #999999: 7.37:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #999999.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #999999 as the accent color, following the Monochrome style: rgb(153, 153, 153), nearest Tailwind token neutral-400. Keep text contrast at least 4.5:1 (this color scores 2.85:1 on white, 7.37:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #999999 with correct contrast constraints. Browse all palette colors.
Questions about #999999
What color is #999999?
#999999 is rgb(153, 153, 153), or hsl(0, 0%, 60%). The nearest reference Tailwind v4 token is neutral-400 (#a1a1a1), not an exact match.
What text color should I use on #999999?
Black (#000000) has the higher black-or-white contrast against #999999: 7.37:1. This calculation assumes opaque, flat sRGB colors. Normal text requires 4.5:1 and large text 3:1 under WCAG 2.2 SC 1.4.3; it is not a complete accessibility assessment.
How can I use exactly #999999 in Tailwind CSS?
Use bg-[#999999], text-[#999999], or a CSS custom property instead of substituting a nearby named token. The reference palette is Tailwind CSS 4.1.18, converted from OKLCH to sRGB hex; newer Tailwind versions and custom themes can differ.
Sources and calculation limits
Reference palette: Tailwind CSS 4.1.18, converted from OKLCH to sRGB hex. Named tokens are versioned approximations; use the exact hex utilities when matching an existing design. Palette pairings come from the linked StyleKit definitions, not external popularity or preference data.