Brown1
brown1 · #FF4040
HEX
#FF4040
RGB
rgb(255, 64, 64)
CMYK
cmyk(0%, 75%, 75%, 0%)
HSL
hsl(0, 100%, 63%)
LAB
lab(57.4, 70.5, 44.8)
What is Brown1?
Brown1 is the brown1 reference in the X11 named colors. Its sRGB value is #FF4040 (rgb 255, 64, 64). It sits in the red family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Brown1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Brown1
An 11-step tonal scale derived from Brown1 (#FF4040). 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
#FFF0F0
#FFF0F0
100
#FFE0E0
#FFE0E0
200
#FFC2C2
#FFC2C2
300
#FFA0A0
#FFA0A0
400
#FF7070
#FF7070
500
#FF4040
#FF4040
600
#D93636
#D93636
700
#A62A2A
#A62A2A
800
#731D1D
#731D1D
900
#401010
#401010
950
#1F0808
#1F0808
Lighter tints (mixed with white)
15%
#FF7A7A
30%
#FF9D9D
45%
#FFB8B8
60%
#FFCECE
75%
#FFE2E2
Darker shades (mixed with black)
15%
#ED3B3B
30%
#DA3535
45%
#C42F2F
60%
#AA2727
75%
#891E1E
Color harmonies for Brown1
Classic color-theory harmonies derived from rotating the hue of Brown1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#FF4040
#FF4040
#42FFFF
#42FFFF
Triadic
Three colors 120° apart
#FF4040
#FF4040
#42FF42
#42FF42
#4242FF
#4242FF
Analogous
Two neighbors ±30° on the wheel
#FF42A1
#FF42A1
#FF4040
#FF4040
#FFA142
#FFA142
Split-complementary
Base + two colors flanking its complement
#FF4040
#FF4040
#42FFA1
#42FFA1
#42A1FF
#42A1FF
Tetradic
Two complementary pairs
#FF4040
#FF4040
#FFFF42
#FFFF42
#42FFFF
#42FFFF
#4242FF
#4242FF
Square
Four colors evenly spaced 90° apart
#FF4040
#FF4040
#A1FF42
#A1FF42
#42FFFF
#42FFFF
#A142FF
#A142FF
Brown1 in every color space
Full conversion of Brown1 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
#FF4040
RGB
rgb(255, 64, 64)
CMYK
cmyk(0%, 75%, 75%, 0%)
HSL
hsl(0, 100%, 63%)
HSV
hsv(0, 75%, 100%)
HWB
hwb(0 25% 0%)
CIE Lab
lab(57.4 70.5 44.8)
OKLCH
oklch(66.0% 0.227 26.0)
XYZ (D65)
xyz(44.00, 25.30, 7.42)
Copy-ready code for Brown1
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: #FF4040;
background-color: #FF4040;CSS variable
:root {
--color-brown1: #FF4040;
}Tailwind config
// tailwind.config.js
colors: {
'brown1': '#FF4040',
}Sass
$color-brown1: #FF4040;Swift UIColor
UIColor(red: 1.000, green: 0.251, blue: 0.251, alpha: 1.0)Android XML
<color name="brown1">#FF4040</color>Closest match in every color system
The nearest Brown1 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 X11 named colors
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 2012
#E55137
Salmon orange
RAL 2009
#F54021
Traffic orange
RAL 3017
#E63244
Rose
RAL 3022
#D95030
Salmon pink
RAL 2004
#F44611
Pure orange
RAL 3018
#D53032
Strawberry red
FAQ about Brown1
What is the HEX code for Brown1?
Brown1 (brown1) has the HEX code #FF4040. In RGB it is rgb(255, 64, 64), and in CMYK it is cmyk(0%, 75%, 75%, 0%).
What is the OKLCH value of Brown1?
Brown1 converts to oklch(0.660 0.227 26.0). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Brown1 accessible for body text?
Used as a background, Brown1 has a contrast ratio of 6.06:1 with black text and 3.47:1 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 Brown1?
The closest Pantone reference to Brown1 by ΔE2000 perceptual distance is Pantone Warm Red C (#F9423A). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Brown1?
The closest RAL Classic reference to Brown1 by ΔE2000 distance is RAL 2012 (Salmon orange, #E55137). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Brown1?
The complementary color (180° opposite on the HSL color wheel) of Brown1 is #42FFFF. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.