Red 4
red-4 · #FF8787
HEX
#FF8787
RGB
rgb(255, 135, 135)
CMYK
cmyk(0%, 47%, 47%, 0%)
HSL
hsl(0, 100%, 76%)
LAB
lab(69.7, 45.4, 20.8)
What is Red 4?
Red 4 is the red-4 reference in the Open Color. Its sRGB value is #FF8787 (rgb 255, 135, 135). 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 4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Red 4
An 11-step tonal scale derived from Red 4 (#FF8787). 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
#FFF5F5
#FFF5F5
100
#FFECEC
#FFECEC
200
#FFD9D9
#FFD9D9
300
#FFC3C3
#FFC3C3
400
#FFA5A5
#FFA5A5
500
#FF8787
#FF8787
600
#D97373
#D97373
700
#A65858
#A65858
800
#733D3D
#733D3D
900
#402222
#402222
950
#1F1010
#1F1010
Lighter tints (mixed with white)
15%
#FFA1A1
30%
#FFB6B6
45%
#FFC9C9
60%
#FFD9D9
75%
#FFE8E8
Darker shades (mixed with black)
15%
#ED7D7D
30%
#DA7272
45%
#C46666
60%
#AA5858
75%
#894646
Color harmonies for Red 4
Classic color-theory harmonies derived from rotating the hue of Red 4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#FF8787
#FF8787
#85FFFF
#85FFFF
Triadic
Three colors 120° apart
#FF8787
#FF8787
#85FF85
#85FF85
#8585FF
#8585FF
Analogous
Two neighbors ±30° on the wheel
#FF85C2
#FF85C2
#FF8787
#FF8787
#FFC285
#FFC285
Split-complementary
Base + two colors flanking its complement
#FF8787
#FF8787
#85FFC2
#85FFC2
#85C2FF
#85C2FF
Tetradic
Two complementary pairs
#FF8787
#FF8787
#FFFF85
#FFFF85
#85FFFF
#85FFFF
#8585FF
#8585FF
Square
Four colors evenly spaced 90° apart
#FF8787
#FF8787
#C2FF85
#C2FF85
#85FFFF
#85FFFF
#C285FF
#C285FF
Red 4 in every color space
Full conversion of Red 4 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
#FF8787
RGB
rgb(255, 135, 135)
CMYK
cmyk(0%, 47%, 47%, 0%)
HSL
hsl(0, 100%, 76%)
HSV
hsv(0, 47%, 100%)
HWB
hwb(0 53% 0%)
CIE Lab
lab(69.7 45.4 20.8)
OKLCH
oklch(75.6% 0.146 21.1)
XYZ (D65)
xyz(54.28, 40.34, 27.85)
Copy-ready code for Red 4
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: #FF8787;
background-color: #FF8787;CSS variable
:root {
--color-red-4: #FF8787;
}Tailwind config
// tailwind.config.js
colors: {
'red-4': '#FF8787',
}Sass
$color-red-4: #FF8787;Swift UIColor
UIColor(red: 1.000, green: 0.529, blue: 0.529, alpha: 1.0)Android XML
<color name="red-4">#FF8787</color>Closest match in every color system
The nearest Red 4 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 3015
#EA899A
Light pink
RAL 3014
#D36E70
Antique pink
RAL 3012
#C1876B
Beige red
RAL 2012
#E55137
Salmon orange
RAL 3017
#E63244
Rose
RAL 2008
#F75E25
Bright red orange
FAQ about Red 4
What is the HEX code for Red 4?
Red 4 (red-4) has the HEX code #FF8787. In RGB it is rgb(255, 135, 135), and in CMYK it is cmyk(0%, 47%, 47%, 0%).
What is the OKLCH value of Red 4?
Red 4 converts to oklch(0.756 0.146 21.1). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Red 4 accessible for body text?
Used as a background, Red 4 has a contrast ratio of 9.07:1 with black text and 2.32:1 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 Red 4?
The closest Pantone reference to Red 4 by ΔE2000 perceptual distance is Pantone 486 C (#E8927C). 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 4?
The closest RAL Classic reference to Red 4 by ΔE2000 distance is RAL 3015 (Light pink, #EA899A). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Red 4?
The complementary color (180° opposite on the HSL color wheel) of Red 4 is #85FFFF. 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.