Sky 400
sky-400 · #38BDF8
HEX
#38BDF8
RGB
rgb(56, 189, 248)
CMYK
cmyk(77%, 24%, 0%, 3%)
HSL
hsl(198, 93%, 60%)
LAB
lab(72.2, -16.0, -39.2)
What is Sky 400?
Sky 400 is the sky-400 reference in the Tailwind CSS palette. Its sRGB value is #38BDF8 (rgb 56, 189, 248). It sits in the blue family. The default color palette shipped with Tailwind CSS v3 by Tailwind Labs. 22 color families across 11 lightness steps (50 to 950). See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Sky 400 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Sky 400
An 11-step tonal scale derived from Sky 400 (#38BDF8). Click any swatch to copy its HEX. Use these as a starting point for design tokens, hover states, and disabled states in a design system.
50
#EFFAFE
#EFFAFE
100
#DFF4FE
#DFF4FE
200
#BFEAFD
#BFEAFD
300
#9CDEFC
#9CDEFC
400
#6ACEFA
#6ACEFA
500
#38BDF8
#38BDF8
600
#30A1D3
#30A1D3
700
#247BA1
#247BA1
800
#195570
#195570
900
#0E2F3E
#0E2F3E
950
#07171E
#07171E
Lighter tints (mixed with white)
15%
#77C9F9
30%
#9BD4FA
45%
#B7DEFB
60%
#CEE8FC
75%
#E2F1FD
Darker shades (mixed with black)
15%
#33B0E7
30%
#2EA1D4
45%
#2990BE
60%
#227DA5
75%
#196485
Color harmonies for Sky 400
Classic color-theory harmonies derived from rotating the hue of Sky 400. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#38BDF8
#38BDF8
#F8733A
#F8733A
Triadic
Three colors 120° apart
#38BDF8
#38BDF8
#F83ABF
#F83ABF
#BFF83A
#BFF83A
Analogous
Two neighbors ±30° on the wheel
#3AF8D2
#3AF8D2
#38BDF8
#38BDF8
#3A60F8
#3A60F8
Split-complementary
Base + two colors flanking its complement
#38BDF8
#38BDF8
#F83A60
#F83A60
#F8D23A
#F8D23A
Tetradic
Two complementary pairs
#38BDF8
#38BDF8
#733AF8
#733AF8
#F8733A
#F8733A
#BFF83A
#BFF83A
Square
Four colors evenly spaced 90° apart
#38BDF8
#38BDF8
#D23AF8
#D23AF8
#F8733A
#F8733A
#60F83A
#60F83A
Sky 400 in every color space
Full conversion of Sky 400 across the color spaces designers and developers actually use — including OKLCH (the perceptually-uniform space that powers Tailwind v4 and CSS Color Module Level 4) and HWB.
HEX
#38BDF8
RGB
rgb(56, 189, 248)
CMYK
cmyk(77%, 24%, 0%, 3%)
HSL
hsl(198, 93%, 60%)
HSV
hsv(198, 77%, 97%)
HWB
hwb(198 22% 3%)
CIE Lab
lab(72.2 -16.0 -39.2)
OKLCH
oklch(75.4% 0.139 232.7)
XYZ (D65)
xyz(36.76, 44.01, 95.35)
Copy-ready code for Sky 400
Drop-in snippets for CSS, Tailwind, Sass, iOS Swift, and Android XML. Click the copy button on any snippet to put it on your clipboard.
CSS
color: #38BDF8;
background-color: #38BDF8;CSS variable
:root {
--color-sky-400: #38BDF8;
}Tailwind config
// tailwind.config.js
colors: {
'sky-400': '#38BDF8',
}Sass
$color-sky-400: #38BDF8;Swift UIColor
UIColor(red: 0.220, green: 0.741, blue: 0.973, alpha: 1.0)Android XML
<color name="sky-400">#38BDF8</color>Closest match in every color system
The nearest Sky 400 equivalent in every other color system on this site, ranked by ΔE2000 perceptual distance. Useful when translating between design-system, web-standard, and industrial color references.
Closest in Tailwind CSS palette
Top 6 ΔE2000-closest entries within the same collection.
Closest Pantone matches
Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.
Closest RAL Classic matches
Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.
RAL 5012
#3B83BD
Light blue
RAL 6027
#84C3BE
Light green
RAL 7001
#8F999F
Silver grey
RAL 5024
#5D9B9B
Pastel blue
RAL 7000
#7E8B92
Squirrel grey
RAL 7004
#9EA0A1
Signal grey
FAQ about Sky 400
What is the HEX code for Sky 400?
Sky 400 (sky-400) has the HEX code #38BDF8. In RGB it is rgb(56, 189, 248), and in CMYK it is cmyk(77%, 24%, 0%, 3%).
What is the OKLCH value of Sky 400?
Sky 400 converts to oklch(0.754 0.139 232.7). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Sky 400 accessible for body text?
Used as a background, Sky 400 has a contrast ratio of 9.80:1 with black text and 2.14:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use black text and verify in real UI context.
What is the closest Pantone to Sky 400?
The closest Pantone reference to Sky 400 by ΔE2000 perceptual distance is Pantone 298 C (#41B6E6). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Sky 400?
The closest RAL Classic reference to Sky 400 by ΔE2000 distance is RAL 5012 (Light blue, #3B83BD). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Sky 400?
The complementary color (180° opposite on the HSL color wheel) of Sky 400 is #F8733A. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
Tailwind CSS default palette (v3)
The default color palette shipped with Tailwind CSS v3 by Tailwind Labs Inc. Use as a reference for design tokens, web color systems, and Tailwind-based design conversations. Names like 'blue-500' are the project's own naming convention.
- Source type
- derived
- Confidence
- high
- License
- MIT
- Last reviewed
- 2026-05-24
Workflow tags
Tailwind palette values are designed for digital interfaces under sRGB. For print, convert to a process-appropriate value and proof against the substrate; do not rely on sRGB CMYK conversion for color-critical print work.