Blue 800
blue-800 · #1E40AF
HEX
#1E40AF
RGB
rgb(30, 64, 175)
CMYK
cmyk(83%, 63%, 0%, 31%)
HSL
hsl(226, 71%, 40%)
LAB
lab(31.9, 30.4, -62.3)
What is Blue 800?
Blue 800 is the blue-800 reference in the Tailwind CSS palette. Its sRGB value is #1E40AF (rgb 30, 64, 175). 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 Blue 800 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Blue 800
An 11-step tonal scale derived from Blue 800 (#1E40AF). 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
#EDF0F9
#EDF0F9
100
#DBE0F2
#DBE0F2
200
#B7C2E5
#B7C2E5
300
#8FA0D7
#8FA0D7
400
#5670C3
#5670C3
500
#1E40AF
#1E40AF
600
#1A3695
#1A3695
700
#142A72
#142A72
800
#0E1D4F
#0E1D4F
900
#08102C
#08102C
950
#040815
#040815
Lighter tints (mixed with white)
15%
#707ABE
30%
#979DCB
45%
#B4B8D8
60%
#CCCEE3
75%
#E1E2EE
Darker shades (mixed with black)
15%
#1B3BA3
30%
#183595
45%
#142F85
60%
#102773
75%
#0B1E5C
Color harmonies for Blue 800
Classic color-theory harmonies derived from rotating the hue of Blue 800. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#1E40AF
#1E40AF
#AE8D1E
#AE8D1E
Triadic
Three colors 120° apart
#1E40AF
#1E40AF
#AE1E3F
#AE1E3F
#3FAE1E
#3FAE1E
Analogous
Two neighbors ±30° on the wheel
#1E88AE
#1E88AE
#1E40AF
#1E40AF
#441EAE
#441EAE
Split-complementary
Base + two colors flanking its complement
#1E40AF
#1E40AF
#AE441E
#AE441E
#88AE1E
#88AE1E
Tetradic
Two complementary pairs
#1E40AF
#1E40AF
#8D1EAE
#8D1EAE
#AE8D1E
#AE8D1E
#3FAE1E
#3FAE1E
Square
Four colors evenly spaced 90° apart
#1E40AF
#1E40AF
#AE1E88
#AE1E88
#AE8D1E
#AE8D1E
#1EAE44
#1EAE44
Blue 800 in every color space
Full conversion of Blue 800 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
#1E40AF
RGB
rgb(30, 64, 175)
CMYK
cmyk(83%, 63%, 0%, 31%)
HSL
hsl(226, 71%, 40%)
HSV
hsv(226, 83%, 69%)
HWB
hwb(226 12% 31%)
CIE Lab
lab(31.9 30.4 -62.3)
OKLCH
oklch(42.4% 0.181 265.6)
XYZ (D65)
xyz(10.10, 7.04, 41.37)
Copy-ready code for Blue 800
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: #1E40AF;
background-color: #1E40AF;CSS variable
:root {
--color-blue-800: #1E40AF;
}Tailwind config
// tailwind.config.js
colors: {
'blue-800': '#1E40AF',
}Sass
$color-blue-800: #1E40AF;Swift UIColor
UIColor(red: 0.118, green: 0.251, blue: 0.686, alpha: 1.0)Android XML
<color name="blue-800">#1E40AF</color>Closest match in every color system
The nearest Blue 800 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 5017
#063971
Traffic blue
RAL 5000
#354D73
Violet blue
RAL 5019
#1B5583
Capri blue
RAL 5007
#3E5F8A
Brilliant blue
RAL 5023
#49678D
Distant blue
RAL 5020
#1D334A
Ocean blue
FAQ about Blue 800
What is the HEX code for Blue 800?
Blue 800 (blue-800) has the HEX code #1E40AF. In RGB it is rgb(30, 64, 175), and in CMYK it is cmyk(83%, 63%, 0%, 31%).
What is the OKLCH value of Blue 800?
Blue 800 converts to oklch(0.424 0.181 265.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Blue 800 accessible for body text?
Used as a background, Blue 800 has a contrast ratio of 2.41:1 with black text and 8.72:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use white text and verify in real UI context.
What is the closest Pantone to Blue 800?
The closest Pantone reference to Blue 800 by ΔE2000 perceptual distance is Pantone 287 C (#003DA5). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Blue 800?
The closest RAL Classic reference to Blue 800 by ΔE2000 distance is RAL 5017 (Traffic blue, #063971). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Blue 800?
The complementary color (180° opposite on the HSL color wheel) of Blue 800 is #AE8D1E. 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.