Color Values
- HEX
- #38BDF8
- RGB
- rgb(56, 189, 248)
- HSL
- hsl(198, 93%, 60%)
- OKLCH
- oklch(0.753 0.139 233)
- CMYK
- cmyk(77%, 24%, 0%, 3%)
- CSS Variable
- var(--color-sky-400)
- Tailwind Class
- bg-sky-400
Accessibility Score
Good
Based on WCAG 2.1 contrast ratios against white and black backgrounds.
On White
2.14:1
On Black
9.8:1
Tailwind Usage — All Utilities
Background
bg-sky-400Text
text-sky-400Border
border-sky-400Ring
ring-sky-400Outline
outline-sky-400Fill
fill-sky-400Stroke
stroke-sky-400From (gradient)
from-sky-400Via (gradient)
via-sky-400To (gradient)
to-sky-400Placeholder
placeholder-sky-400Caret
caret-sky-400Accent
accent-sky-400Decoration
decoration-sky-400Shadow Color
shadow-sky-400Tailwind v3 Config (extend custom color)
// tailwind.config.js
module.exports = {
theme: {
extend: {
colors: {
'sky-400': '#38bdf8',
},
},
},
};CSS Equivalent
/* Hex */
background-color: #38BDF8;
/* RGB */
background-color: rgb(56, 189, 248);
/* HSL */
background-color: hsl(198, 93%, 60%);
/* OKLCH (CSS Color Level 4) */
background-color: oklch(0.753 0.139 233);
/* CSS Custom Property (Tailwind v4) */
background-color: var(--color-sky-400);
/* Gradient example */
background: linear-gradient(135deg, #f0f9ff 0%, #0ea5e9 100%);OKLCH — Modern Color Space
Lightness (L)
0.753
75% perceived brightness
Chroma (C)
0.139
Color intensity / saturation
Hue (H)
233°
Angle on perceptual hue wheel
oklch(0.753 0.139 233)OKLCH is a perceptually uniform color space in CSS Color Level 4. Unlike HSL, equal steps in L produce equal perceived lightness changes — making it ideal for building accessible, harmonious design system scales.
Design Recommendations
Mid-tone accent
Shade 400 of the Sky palette
Recommended Uses
- ✓Icon fills on white
- ✓Secondary buttons (large text)
- ✓Chart & data visualization bars
- ✓Decorative UI elements
Avoid
Preview
On White
Aa Bb Cc
On Black
Aa Bb Cc
As Background
Aa Bb Cc — #38BDF8
Similar Tailwind Colors
Perceptually close shades from other Tailwind color families.
Nearest Named Color
Tailwind Sky 400
Nearest Tailwind equivalent — #38BDF8
Frequently Asked Questions
- What is the hex code for Tailwind Sky 400?
- Tailwind Sky 400 has the hex code #38BDF8. Its RGB value is rgb(56, 189, 248) and its HSL value is hsl(198, 93%, 60%).
- What Tailwind utility classes use Sky 400?
- Use bg-sky-400 for backgrounds, text-sky-400 for text color, border-sky-400 for borders, and ring-sky-400 for focus rings. In Tailwind v4 the CSS variable var(--color-sky-400) is available natively.
- Is Tailwind Sky 400 WCAG accessible?
- Tailwind Sky 400 achieves a 2.14:1 contrast ratio on white (Fail) and 9.8:1 on black (AAA). Its overall accessibility score is 60/100 (Good).
- What is the OKLCH value for Tailwind Sky 400?
- Tailwind Sky 400 in OKLCH is oklch(0.753 0.139 233) — lightness 0.753, chroma 0.139, hue 233°. OKLCH is a perceptually uniform space supported natively in modern CSS via the `color()` function.
- What is Tailwind Sky 400 used for?
- At shade 400, Tailwind Sky 400 is best described as "Mid-tone accent". Recommended uses: Icon fills on white, Secondary buttons (large text), Chart & data visualization bars.