#1a3a5c
#1a3a5c is rgb(26, 58, 92), or hsl(211, 56%, 23%). The nearest reference Tailwind v4 token is slate-700 (#314158), not an exact match.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 11.64:1 | pass | pass | pass |
| black | 1.80:1 | fail | fail | fail |
| slate-900 | 1.53:1 | fail | fail | fail |
| gray-100 | 10.58:1 | 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 #1a3a5c in real UI palettes
These colors appear alongside #1a3a5c in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #2d7d46
Used together in Islamic Geometric.
2.29:1
Not for normal text - #8b2332
Used together in Islamic Geometric.
1.32:1
Not for normal text - #c9a74e
Used together in Islamic Geometric.
5.06:1
AA normal text - #f5ecd7
Used together in Islamic Geometric.
9.90:1
AA normal text
A readable starting point
white text on #1a3a5c: 11.64:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #1a3a5c.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #1a3a5c as the primary color, following the Islamic Geometric style: rgb(26, 58, 92), nearest Tailwind token slate-700. Keep text contrast at least 4.5:1 (this color scores 11.64:1 on white, 1.8:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #1a3a5c with correct contrast constraints. Browse all palette colors.
Questions about #1a3a5c
What color is #1a3a5c?
#1a3a5c is rgb(26, 58, 92), or hsl(211, 56%, 23%). The nearest reference Tailwind v4 token is slate-700 (#314158), not an exact match.
What text color should I use on #1a3a5c?
White (#ffffff) has the higher black-or-white contrast against #1a3a5c: 11.64:1. 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 #1a3a5c in Tailwind CSS?
Use bg-[#1a3a5c], text-[#1a3a5c], 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.