#cc0000
#cc0000 is rgb(204, 0, 0), or hsl(0, 100%, 40%). The nearest reference Tailwind v4 token is red-700 (#c10007), not an exact match.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 5.89:1 | pass | pass | fail |
| black | 3.57:1 | fail | pass | fail |
| slate-900 | 3.03:1 | fail | pass | fail |
| gray-100 | 5.35:1 | pass | pass | 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 #cc0000 in real UI palettes
These colors appear alongside #cc0000 in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #1a1a1a
Used together in Constructivism.
2.96:1
Not for normal text - #8b4513
Used together in Constructivism.
1.21:1
Not for normal text - #d4a843
Used together in Constructivism.
2.66:1
Not for normal text - #f2e8d5
Used together in Constructivism.
4.84:1
AA normal text
A readable starting point
white text on #cc0000: 5.89:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #cc0000.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #cc0000 as the primary color, following the Constructivism style: rgb(204, 0, 0), nearest Tailwind token red-700. Keep text contrast at least 4.5:1 (this color scores 5.89:1 on white, 3.57:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #cc0000 with correct contrast constraints. Browse all palette colors.
Questions about #cc0000
What color is #cc0000?
#cc0000 is rgb(204, 0, 0), or hsl(0, 100%, 40%). The nearest reference Tailwind v4 token is red-700 (#c10007), not an exact match.
What text color should I use on #cc0000?
White (#ffffff) has the higher black-or-white contrast against #cc0000: 5.89:1. 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 #cc0000 in Tailwind CSS?
Use bg-[#cc0000], text-[#cc0000], 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.