#ef5237

Flamingo

Closest match (97% match)

Color formats

RGB

rgb(239, 82, 55)

Red, Green, Blue components

HSL

hsl(9, 85%, 58%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 66, 77, 6)

Print color encoding

Luminance

0.247

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#ef5237

#37d4ef

Analogous (Adjacent)

#ef3778

#ef5237

#efae37

Triadic

#ef5237

#37ef52

#5237ef

Split complementary

#ef5237

#37efae

#3778ef

Complete conversion table

HEX

#EF5237

RGB

rgb(239,82,55)

RGBA

rgba(239,82,55, 1)

HSL

hsl(8.8,85.19%,57.65%)

OKLCH (Modern CSS)

oklch(0.65 0.20 32.2)

CSS Variable

--color: #ef5237;

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

3.54

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

5.93

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#ef5237#464637

ORIG

SIM

Deuteranopia (green)

#ef5237#a9b837

ORIG

SIM

Tritanopia (blue)

#ef5237#e78d9c

ORIG

SIM

Monochrome (color blind)

#ef5237#ad7d71

Mixing guide

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

MIXING PALETTE

70%

17%

12%

RYB PIGMENTS

Cadmium red

Pigment

70%

Titanium white

Pigment

17%

Cadmium yellow

Pigment

12%

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)

24.7%

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.

Fuego

#EE5533

Tiger Lily

#E1583F

Heavy Orange

#EE4328

Cascara

#EE4433

Picton Blue

#37D4EF

Tulip Tree

#EFAE37

Violet Red

#EF3778

Malachite

#37EF52

Royal Blue

#5237EF

Turquoise

#37EFAE

Salmon

#FF8F6C

Bright Red

#AA0103