#ff2500

Scarlet

Closest match (100% match)

Color formats

RGB

rgb(255, 37, 0)

Red, Green, Blue components

HSL

hsl(9, 100%, 50%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 85, 100, 0)

Print color encoding

Luminance

0.226

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#ff2500

#00daff

Analogous (Adjacent)

#ff005a

#ff2500

#ffa400

Triadic

#ff2500

#00ff25

#2500ff

Split complementary

#ff2500

#00ffa5

#005aff

Complete conversion table

HEX

#FF2500

RGB

rgb(255,37,0)

RGBA

rgba(255,37,0, 1)

HSL

hsl(8.71,100%,50%)

OKLCH (Modern CSS)

oklch(0.64 0.25 31.1)

CSS Variable

--color: #ff2500;

Preview

Readability and Typography

Headline Test

This text demonstrates the reading experience on this background color.

Headline Test

This text demonstrates the reading experience on this background color.

UI Component Set

This is an example alert bar using the selected color.

SOLIDSOFTOUTLINE

Product Mockup

4582 •••• •••• 9018

CARDHOLDER

JOHN DOE

VALID

12/28

Mobile application

Customer support

Hi! How can we help you today?

I love this new color! 😍

Data visualization

Weekly growth

+1,240

12.5%

WED

2,450

Contrast

Contrast and readability (WCAG)

On white background

3.81

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

5.52

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#ff2500#151400

ORIG

SIM

Deuteranopia (green)

#ff2500#9eb300

ORIG

SIM

Tritanopia (blue)

#ff2500#f47f8b

ORIG

SIM

Monochrome (color blind)

#ff2500#c7684e

Mixing guide

How to mix this color using physical paints or printing inks.

MIXING PALETTE

85%

15%

RYB PIGMENTS

Cadmium red

Pigment

85%

Cadmium yellow

Pigment

15%

Unlike light, mixing paints makes colors darker. This simulation mimics the behavior of physical pigments.

Physical properties

Perceptual and light-related properties derived from the digital color.

Spectral relationship

Red hue

620–750 nm • closest visible-spectrum range

750 nm

380 nm

Visual temperature

Warm

A perceptual warm–cool classification. Kelvin does not apply to an arbitrary interface color.

Cool

Neutral

Warm

Luminance (brightness)

22.6%

Dark • relative luminance

50%

100%

An RGB color is produced by combined screen light, so this range is a visual comparison rather than an exact physical wavelength.

Gradient gallery

Generate premium CSS backgrounds and textures from your color.

Similar & Related Colors

Mathematically computed harmonies, shades, and similar tones for this color.

Scarlet

#FF2400

Maraschino

#FF2600

RedЯum

#FF2200

Carolina Reaper

#FF1500

Cyan / Aqua

#00DAFF

Web Orange

#FFA400

Rose

#FF005A

Green

#00FF25

Blue

#2500FF

Spring Green

#00FFA5

Burning Orange

#FF7140

Guardsman Red

#B70000