Orange1
orange1 · #FFA500
HEX
#FFA500
RGB
rgb(255, 165, 0)
CMYK
cmyk(0%, 35%, 100%, 0%)
HSL
hsl(39, 100%, 50%)
LAB
lab(74.9, 23.9, 79.0)
What is Orange1?
Orange1 is the orange1 reference in the X11 named colors. Its sRGB value is #FFA500 (rgb 255, 165, 0). It sits in the yellow 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 Orange1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Orange1
An 11-step tonal scale derived from Orange1 (#FFA500). 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
#FFF8EB
#FFF8EB
100
#FFF1D6
#FFF1D6
200
#FFE2AD
#FFE2AD
300
#FFD280
#FFD280
400
#FFBC40
#FFBC40
500
#FFA500
#FFA500
600
#D98C00
#D98C00
700
#A66B00
#A66B00
800
#734A00
#734A00
900
#402900
#402900
950
#1F1400
#1F1400
Lighter tints (mixed with white)
15%
#FFB66C
30%
#FFC695
45%
#FFD4B3
60%
#FFE1CB
75%
#FFEDE1
Darker shades (mixed with black)
15%
#ED9900
30%
#DA8C00
45%
#C47E00
60%
#AA6C00
75%
#895600
Color harmonies for Orange1
Classic color-theory harmonies derived from rotating the hue of Orange1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#FFA500
#FFA500
#0059FF
#0059FF
Triadic
Three colors 120° apart
#FFA500
#FFA500
#00FFA6
#00FFA6
#A600FF
#A600FF
Analogous
Two neighbors ±30° on the wheel
#FF2600
#FF2600
#FFA500
#FFA500
#D9FF00
#D9FF00
Split-complementary
Base + two colors flanking its complement
#FFA500
#FFA500
#00D9FF
#00D9FF
#2600FF
#2600FF
Tetradic
Two complementary pairs
#FFA500
#FFA500
#59FF00
#59FF00
#0059FF
#0059FF
#A600FF
#A600FF
Square
Four colors evenly spaced 90° apart
#FFA500
#FFA500
#00FF26
#00FF26
#0059FF
#0059FF
#FF00D9
#FF00D9
Orange1 in every color space
Full conversion of Orange1 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
#FFA500
RGB
rgb(255, 165, 0)
CMYK
cmyk(0%, 35%, 100%, 0%)
HSL
hsl(39, 100%, 50%)
HSV
hsv(39, 100%, 100%)
HWB
hwb(39 0% 0%)
CIE Lab
lab(74.9 23.9 79.0)
OKLCH
oklch(79.3% 0.171 70.7)
XYZ (D65)
xyz(54.70, 48.18, 6.42)
Copy-ready code for Orange1
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: #FFA500;
background-color: #FFA500;CSS variable
:root {
--color-orange1: #FFA500;
}Tailwind config
// tailwind.config.js
colors: {
'orange1': '#FFA500',
}Sass
$color-orange1: #FFA500;Swift UIColor
UIColor(red: 1.000, green: 0.647, blue: 0.000, alpha: 1.0)Android XML
<color name="orange1">#FFA500</color>Closest match in every color system
The nearest Orange1 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 1037
#F39F18
Sun yellow
RAL 1033
#F3A505
Dahlia yellow
RAL 1028
#F4A900
Melon yellow
RAL 1034
#EFA94A
Pastel yellow
RAL 1006
#E4A010
Maize yellow
RAL 1007
#DC9D00
Daffodil yellow
FAQ about Orange1
What is the HEX code for Orange1?
Orange1 (orange1) has the HEX code #FFA500. In RGB it is rgb(255, 165, 0), and in CMYK it is cmyk(0%, 35%, 100%, 0%).
What is the OKLCH value of Orange1?
Orange1 converts to oklch(0.793 0.171 70.7). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Orange1 accessible for body text?
Used as a background, Orange1 has a contrast ratio of 10.63:1 with black text and 1.97:1 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 Orange1?
The closest Pantone reference to Orange1 by ΔE2000 perceptual distance is Pantone 137 C (#FFA300). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Orange1?
The closest RAL Classic reference to Orange1 by ΔE2000 distance is RAL 1037 (Sun yellow, #F39F18). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Orange1?
The complementary color (180° opposite on the HSL color wheel) of Orange1 is #0059FF. 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.