#0a0a0a
#0a0a0a is rgb(10, 10, 10), or hsl(0, 0%, 4%). It exactly matches the sRGB hex approximation of neutral-950 in the reference Tailwind v4 palette.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 19.80:1 | pass | pass | pass |
| black | 1.06:1 | fail | fail | fail |
| slate-900 | 1.11:1 | fail | fail | fail |
| gray-100 | 17.99:1 | pass | pass | pass |
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 #0a0a0a in real UI palettes
These colors appear alongside #0a0a0a in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #a020f0
Used together in Acid Graphics, Cyber Chinese and 2 more styles.
3.73:1
Not for normal text - #00d4ff
Used together in Cyber Chinese, Outrun.
11.18:1
AA normal text - #4a1a4a
Used together in Gothic, Gothic Lolita.
1.45:1
Not for normal text - #c9a227
Used together in Cyber Chinese, Gothic.
8.18:1
AA normal text - #e5e5e5
Used together in Editorial, Gothic Lolita.
15.72:1
AA normal text - #ff6ec7
Used together in Acid Graphics, Outrun.
7.83:1
AA normal text
A readable starting point
white text on #0a0a0a: 19.80:1 contrast.
Design styles using this color
- Acid Graphicssecondary · expressive
- Cyber Chinesesecondary · expressive
- Dark Galleryprimary · minimal
- Editorialprimary · minimal
- Generative Artsecondary · expressive
- Glitch Artsecondary · expressive
- Gothicsecondary · retro
- Gothic Lolitaaccent · expressive
- Neon Samuraisecondary · expressive
- Outrunsecondary · retro
- Oversized Typographyprimary · expressive
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #0a0a0a.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #0a0a0a as the secondary color, following the Acid Graphics style: rgb(10, 10, 10), nearest Tailwind token neutral-950. Keep text contrast at least 4.5:1 (this color scores 19.8:1 on white, 1.06:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #0a0a0a with correct contrast constraints. Browse all palette colors.
Questions about #0a0a0a
What color is #0a0a0a?
#0a0a0a is rgb(10, 10, 10), or hsl(0, 0%, 4%). It exactly matches the sRGB hex approximation of neutral-950 in the reference Tailwind v4 palette.
What text color should I use on #0a0a0a?
White (#ffffff) has the higher black-or-white contrast against #0a0a0a: 19.80:1. 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 #0a0a0a in Tailwind CSS?
Use bg-[#0a0a0a], text-[#0a0a0a], 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.