Red 9
red-9 · #C92A2A
HEX
#C92A2A
RGB
rgb(201, 42, 42)
CMYK
cmyk(0%, 79%, 79%, 21%)
HSL
hsl(0, 65%, 48%)
LAB
lab(44.6, 60.7, 40.2)
What is Red 9?
Red 9 is the red-9 reference in the Open Color. Its sRGB value is #C92A2A (rgb 201, 42, 42). It sits in the red family. Open Color, an open-source color palette by Heeyeun designed for UI work. 13 hues across 10 shades (0 to 9) tuned for screen legibility and accessibility. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Red 9 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Red 9
An 11-step tonal scale derived from Red 9 (#C92A2A). 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
#FBEEEE
#FBEEEE
100
#F6DDDD
#F6DDDD
200
#EEBBBB
#EEBBBB
300
#E49595
#E49595
400
#D75F5F
#D75F5F
500
#C92A2A
#C92A2A
600
#AB2424
#AB2424
700
#831B1B
#831B1B
800
#5A1313
#5A1313
900
#320B0B
#320B0B
950
#180505
#180505
Lighter tints (mixed with white)
15%
#D27272
30%
#DB9898
45%
#E3B5B5
60%
#EBCDCD
75%
#F3E1E1
Darker shades (mixed with black)
15%
#BB2626
30%
#AB2222
45%
#9A1E1E
60%
#851818
75%
#6B1111
Color harmonies for Red 9
Classic color-theory harmonies derived from rotating the hue of Red 9. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#C92A2A
#C92A2A
#2BCACA
#2BCACA
Triadic
Three colors 120° apart
#C92A2A
#C92A2A
#2BCA2B
#2BCA2B
#2B2BCA
#2B2BCA
Analogous
Two neighbors ±30° on the wheel
#CA2B7A
#CA2B7A
#C92A2A
#C92A2A
#CA7A2B
#CA7A2B
Split-complementary
Base + two colors flanking its complement
#C92A2A
#C92A2A
#2BCA7A
#2BCA7A
#2B7ACA
#2B7ACA
Tetradic
Two complementary pairs
#C92A2A
#C92A2A
#CACA2B
#CACA2B
#2BCACA
#2BCACA
#2B2BCA
#2B2BCA
Square
Four colors evenly spaced 90° apart
#C92A2A
#C92A2A
#7ACA2B
#7ACA2B
#2BCACA
#2BCACA
#7A2BCA
#7A2BCA
Red 9 in every color space
Full conversion of Red 9 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
#C92A2A
RGB
rgb(201, 42, 42)
CMYK
cmyk(0%, 79%, 79%, 21%)
HSL
hsl(0, 65%, 48%)
HSV
hsv(0, 79%, 79%)
HWB
hwb(0 16% 21%)
CIE Lab
lab(44.6 60.7 40.2)
OKLCH
oklch(54.6% 0.195 26.6)
XYZ (D65)
xyz(25.34, 14.24, 3.61)
Copy-ready code for Red 9
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: #C92A2A;
background-color: #C92A2A;CSS variable
:root {
--color-red-9: #C92A2A;
}Tailwind config
// tailwind.config.js
colors: {
'red-9': '#C92A2A',
}Sass
$color-red-9: #C92A2A;Swift UIColor
UIColor(red: 0.788, green: 0.165, blue: 0.165, alpha: 1.0)Android XML
<color name="red-9">#C92A2A</color>Closest match in every color system
The nearest Red 9 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 Open Color
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 3028
#CB3234
Pure red
RAL 2002
#CB2821
Vermilion
RAL 3018
#D53032
Strawberry red
RAL 3016
#B32821
Coral red
RAL 3027
#C51D34
Raspberry red
RAL 3031
#B32428
Orient red
FAQ about Red 9
What is the HEX code for Red 9?
Red 9 (red-9) has the HEX code #C92A2A. In RGB it is rgb(201, 42, 42), and in CMYK it is cmyk(0%, 79%, 79%, 21%).
What is the OKLCH value of Red 9?
Red 9 converts to oklch(0.546 0.195 26.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Red 9 accessible for body text?
Used as a background, Red 9 has a contrast ratio of 3.85:1 with black text and 5.46:1 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 Red 9?
The closest Pantone reference to Red 9 by ΔE2000 perceptual distance is Pantone 1797 C (#CB333B). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Red 9?
The closest RAL Classic reference to Red 9 by ΔE2000 distance is RAL 3028 (Pure red, #CB3234). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Red 9?
The complementary color (180° opposite on the HSL color wheel) of Red 9 is #2BCACA. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
Open Color (Yeun)
Open Color, an open-source color palette by Heeyeun designed for UI designers and developers. 13 hues across 10 shades. Use as a designer-friendly palette alternative to Tailwind. Values are intentionally chosen for UI legibility and accessibility.
- Source type
- derived
- Confidence
- high
- License
- MIT
- Last reviewed
- 2026-05-24
Workflow tags
Open Color values are tuned for digital UI. For print, treat as a starting point and proof against the substrate.