PALUNEXA
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COLOR FIELD NOTES

Flame orange
#ff5733

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

Selected color · sRGB#ff5733
The numbers behind the color · RGB / HSL / OKLCH
HEX
#ff5733
RGB
rgb(255, 87, 51)
HSL
hsl(10.59, 100%, 60%)
OKLCH
oklch(0.68035815 0.21001183 33.691637)

What makes this color different?

This red-orange keeps the red channel at maximum while adding green and blue. Compared with pure red, it moves toward orange and supplies a lively accent without using the CSS orange keyword.

The name is descriptive; use the numeric color value in CSS.

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

Try it on one primary action in a mostly neutral landing page or on a small category marker. Blue-cyan complementary accents can separate a secondary illustration from the warm primary area.

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

What to check before using it

A vivid warm button is not automatically compatible with white text. Check the computed contrast before using it for a small label or a long message.

Make it readable. / CSS
Contrast ratio · #ff5733
Selected colorContrast ratioNormal text · AA
Black6.66:1Pass
White3.15:1Below target

CSS you can use

.color-surface {
  background: #ff5733;
  color: #000000;
}

Questions and direct answers

What are the values of #ff5733?

#ff5733 is rgb(255, 87, 51), hsl(10.59, 100%, 60%), and oklch(0.68035815 0.21001183 33.691637). These values are calculated from the same opaque sRGB color.

Which text color is more readable on #ff5733?

Black has 6.66:1 contrast and white has 3.15:1. 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 #ff5733, #33dbff. Achromatic colors stay neutral.

Is Flame orange a standardized CSS color name?

No. It is a descriptive name for this atlas entry. Use #ff5733 or its numeric RGB/HSL/OKLCH form in code; the words Flame orange are not a CSS keyword.

Related colors

Red#ff0000Terracotta#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.

#ff5733

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
#ff3375rgb(255, 51, 117)oklch(0.65984279 0.23659861 8.429975)
Contrast ratio: 5.98:1
02BASE
#ff5733rgb(255, 87, 51)oklch(0.68035815 0.21001183 33.691637)
Contrast ratio: 6.66:1
03COMPANION
#ffbd33rgb(255, 189, 51)oklch(0.83797843 0.15976643 80.625252)
Contrast ratio: 12.58:1
HSL / Analogous
Color values & advanced tools

Selected color / #FF5733

The numbers behind the color

One color, four ways to describe it.

HEX
#ff5733
RGB
rgb(255, 87, 51)
HSL
hsl(10.59, 100%, 60%)
OKLCH
oklch(0.68035815 0.21001183 33.691637)
Hue
10.59°
Saturation
100.00%
Lightness
60.00%
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: 0

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.

#ff3375oklch(0.65984279 0.23659861 8.429975)#ff5733oklch(0.68035815 0.21001183 33.691637)#ffbd33oklch(0.83797843 0.15976643 80.625252)
Palette CSS
:root {
  --palette-1: #ff3375;
  --palette-2: #ff5733;
  --palette-3: #ffbd33;
}
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 / #ff5733 · 6.66:1

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.

#ffbd33 / #ff5733 · 1.89:1 · Normal text · AA

Suggested text color: #000000 (6.66:1).

Displayed text contrast: 6.66:1 · 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.

#ff5733 / #ffffff
Contrast ratio3.15:1
  • 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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