PALUNEXA
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COLOR FIELD NOTES

Red
#ff0000

Color names, HEX, RGB, HSL or OKLCH. No account needed.

Selected color · sRGB#ff0000
The numbers behind the color · RGB / HSL / OKLCH
HEX
#ff0000
RGB
rgb(255, 0, 0)
HSL
hsl(0, 100%, 50%)
OKLCH
oklch(0.62795536 0.25768331 29.233885)

What makes this color different?

This is the sRGB red primary: the red channel is full and green and blue are zero. Its pure channel definition makes it a useful reference when checking conversion and hue-rotation tools.

This HEX also has a CSS keyword name.

Better together.

Complementary

Two colors, 180° apart. A clear contrast across the HSL color wheel.

Analogous

Neighbors at −30°, 0° and +30°. A close-knit family of hues.

Triadic

Three hues at 0°, 120° and 240°. An evenly spaced triangle on the HSL wheel.

A practical design example

Reserve it for a small, deliberate emphasis such as a recording marker or a labeled destructive action. A warning also needs explicit text or an icon, because color alone cannot explain the action.

Design advice is context-dependent. It is separate from the numeric calculations.

What to check before using it

White text on a red surface is not automatically readable at normal body size. Check the ratio below before adopting a red button or banner.

Make it readable. / CSS
Contrast ratio · #ff0000
Selected colorContrast ratioNormal text · AA
Black5.25:1Pass
White4.00:1Below target

CSS you can use

.color-surface {
  background: #ff0000;
  color: #000000;
}

Questions and direct answers

What are the values of #ff0000?

#ff0000 is rgb(255, 0, 0), hsl(0, 100%, 50%), and oklch(0.62795536 0.25768331 29.233885). These values are calculated from the same opaque sRGB color.

Which text color is more readable on #ff0000?

Black has 5.25:1 contrast and white has 4.00:1. Of these two, Black has the higher contrast. Normal-text AA requires at least 4.5:1.

How is the complementary palette calculated?

The engine rotates HSL hue by 180° and keeps saturation and lightness. For this color the result is #ff0000, #00ffff. Achromatic colors stay neutral.

Does red always mean an error?

No. Red can indicate recording, a brand or a category. Its meaning depends on the context; label errors directly instead of making users infer them from the hue.

Related colors

Flame orange#ff5733Terracotta#d86b4dGold#ffd700
Explore this color in the studio

02 / COLOR COMPANIONS

Better together.

Find a different perspective on your color with a little color theory.

#ff0000

The base color is the anchor. Locks and the base color stay unchanged.

Export palette CSS

Neighbors at −30°, 0° and +30°. A close-knit family of hues.

01COMPANION
#ff0080rgb(255, 0, 128)oklch(0.64534934 0.26034308 2.470761)
Contrast ratio: 5.56:1
02BASE
#ff0000rgb(255, 0, 0)oklch(0.62795536 0.25768331 29.233885)
Contrast ratio: 5.25:1
03COMPANION
#ff8000rgb(255, 128, 0)oklch(0.73189484 0.18580322 52.98468)
Contrast ratio: 8.34:1
HSL / Analogous
Color values & advanced tools

Selected color / #FF0000

The numbers behind the color

One color, four ways to describe it.

HEX
#ff0000
RGB
rgb(255, 0, 0)
HSL
hsl(0, 100%, 50%)
OKLCH
oklch(0.62795536 0.25768331 29.233885)
Hue
0.00°
Saturation
100.00%
Lightness
50.00%
Where this harmony might work

Design suggestions below are subjective. Hue angles and contrast ratios are calculated facts.

Suggested use
Editorial pages, lifestyle brands and calm interfaces.
Strength
Neighboring hues create a related visual rhythm.
Considerations
Similar hues can blur boundaries; add labels and neutral spacing.
Design example
Use the middle hue for a hero panel and its neighbors for decorative cards.
OKLCH · Perceptual adjustments

Adjust lightness and chroma of unlocked companions in OKLCH. HSL hue spacing can change. Preview the result before applying.

Current palette
Adjusted preview

Colors needing sRGB chroma reduction: 1

The base color is the anchor. Locks and the base color stay unchanged.

Compare with the original HSL harmony

These are the unedited theory colors. Compare their HEX and OKLCH values with the edited palette above.

#ff0080oklch(0.64534934 0.26034308 2.470761)#ff0000oklch(0.62795536 0.25768331 29.233885)#ff8000oklch(0.73189484 0.18580322 52.98468)
Palette CSS
:root {
  --palette-1: #ff0080;
  --palette-2: #ff0000;
  --palette-3: #ff8000;
}
Live design preview

03 / IN CONTEXT

Put it into perspective.

Real CSS. Your colors. A small glimpse of what comes next.

Palette role mapping

Rendered text pair #000000 / #ff0000 · 5.25:1

your-next-idea.design
FORM & FIELDIndependent ideas. Considered colors.
STUDIO FOR EVERYDAY IDEAS

Room for a fresh perspective.

Thoughtfully made things start with a little curiosity.

Discover the collection

The palette text/background pair is below normal-text AA.

#ff8000 / #ff0000 · 1.59:1 · Normal text · AA

Suggested text color: #000000 (5.25:1).

Displayed text contrast: 5.25:1 · Accessible text alternatives affect only the preview. Your palette stays unchanged.

The tested pair is used on colored buttons, cards, KPIs and slide bands. Other template text uses #262a23 (13.18:1) or #55594f (6.47:1) on #f6f3ec. Charts have numbered labels. This is not a complete accessibility audit.

Text contrast checker

Accessibility / WCAG AA

Make it readable.

Check the selected color against your text or background color.

Suggested text color: #000000 · 21.00:1

AA requires 4.5:1 for normal text and 3:1 for large text. This checks color contrast, not full WCAG compliance.

Aa

Color should be seen. Words should be read.

#ff0000 / #ffffff
Contrast ratio4.00:1
  • Normal text · AABelow target
  • Large text · AAPass
  • Normal text · AAABelow target
  • Large text · AAABelow target

A little theory. A lot to explore.

PALUNEXA rotates hues on the HSL color wheel and keeps saturation and lightness unchanged. Monochromatic palettes vary lightness instead. Harmony is a starting point for design, not a guarantee of aesthetic fit.

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