#f4b301 Hex Color
#f4b301 is rgb(244, 179, 1), or hsl(44, 99%, 48%). The nearest reference Tailwind v4 token is yellow-500 (#f0b100), not an exact match. Used as an accent color in the Kinetic Constructivism palette.
Conversions
WCAG contrast
| Background | Ratio | AA text | AA large | AAA text |
|---|---|---|---|---|
| white | 1.86:1 | fail | fail | fail |
| black | 11.30:1 | pass | pass | pass |
| slate-900 | 9.60:1 | pass | pass | pass |
| gray-100 | 1.69:1 | 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 #f4b301 in real UI palettes
These colors appear alongside #f4b301 in StyleKit's curated palettes. Co-occurrence is not a promise of text readability; each pair includes its measured contrast.
- #17130e
Used together in Kinetic Constructivism.
9.94:1
AA normal text - #1c4a87
Used together in Kinetic Constructivism.
4.75:1
AA normal text - #e0231b
Used together in Kinetic Constructivism.
2.55:1
Not for normal text - #efe9dc
Used together in Kinetic Constructivism.
1.54:1
Not for normal text
A readable starting point
black text on #f4b301: 11.30:1 contrast.
Design styles using this color
Tints and shades
Lightness ladder in HSL space, from the lightest tint to the darkest shade of #f4b301.
Similar colors in the library
Nearest swatches by perceptual OKLab distance across all curated style palettes.
AI prompt snippet
Use #f4b301 as the accent color, following the Kinetic Constructivism style: rgb(244, 179, 1), nearest Tailwind token yellow-500. Keep text contrast at least 4.5:1 (this color scores 1.86:1 on white, 11.3:1 on black).
Paste this into ChatGPT, Claude, Cursor, or v0 to use #f4b301 with correct contrast constraints. Browse all palette colors.
Questions about #f4b301
What color is #f4b301?
#f4b301 is rgb(244, 179, 1), or hsl(44, 99%, 48%). The nearest reference Tailwind v4 token is yellow-500 (#f0b100), not an exact match. Used as an accent color in the Kinetic Constructivism palette.
What text color should I use on #f4b301?
Black (#000000) has the higher black-or-white contrast against #f4b301: 11.30:1. 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 #f4b301 in Tailwind CSS?
Use bg-[#f4b301], text-[#f4b301], 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.