#b52d00

Fire

Closest match (94% match)

Color formats

RGB

rgb(181, 45, 0)

Red, Green, Blue components

HSL

hsl(15, 100%, 35%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 75, 100, 29)

Print color encoding

Luminance

0.117

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#b52d00

#0088b5

Analogous (Adjacent)

#b5002d

#b52d00

#b58800

Triadic

#b52d00

#00b52d

#2d00b5

Split complementary

#b52d00

#00b588

#002db5

Complete conversion table

HEX

#B52D00

RGB

rgb(181,45,0)

RGBA

rgba(181,45,0, 1)

HSL

hsl(14.92,100%,35.49%)

OKLCH (Modern CSS)

oklch(0.51 0.18 35.1)

CSS Variable

--color: #b52d00;

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

6.29

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

3.34

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#b52d00#191900

ORIG

SIM

Deuteranopia (green)

#b52d00#707f00

ORIG

SIM

Tritanopia (blue)

#b52d00#ae636d

ORIG

SIM

Monochrome (color blind)

#b52d00#7f5748

Mixing guide

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

MIXING PALETTE

53%

29%

18%

RYB PIGMENTS

Cadmium red

Pigment

53%

Ivory black

Pigment

29%

Cadmium yellow

Pigment

18%

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)

11.7%

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.

Crimson Velvet Sunset

#B52604

Dropped Brick

#BB3300

Rusty Red

#AF2F0D

Once Bitten

#BD2F10

Bondi Blue

#0088B5

Pirate Gold

#B58800

Monza

#B5002E

Green Haze

#00B52D

Dark Blue

#2D00B5

Persian Green

#00B588

Burning Orange

#FA6939

Lonestar

#740000