#870c21

Monarch

Closest match (99% match)

Color formats

RGB

rgb(135, 12, 33)

Red, Green, Blue components

HSL

hsl(350, 84%, 29%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 91, 76, 47)

Print color encoding

Luminance

0.055

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#870c21

#0c8772

Analogous (Adjacent)

#870c5e

#870c21

#87350c

Triadic

#870c21

#21870c

#0c2187

Split complementary

#870c21

#0c8735

#0c5e87

Complete conversion table

HEX

#870C21

RGB

rgb(135,12,33)

RGBA

rgba(135,12,33, 1)

HSL

hsl(349.76,83.67%,28.82%)

OKLCH (Modern CSS)

oklch(0.40 0.15 20.7)

CSS Variable

--color: #870c21;

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

9.98

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.10

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#870c21#151521

ORIG

SIM

Deuteranopia (green)

#870c21#606821

ORIG

SIM

Tritanopia (blue)

#870c21#814046

ORIG

SIM

Monochrome (color blind)

#870c21#434242

Mixing guide

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

MIXING PALETTE

49%

47%

RYB PIGMENTS

Cadmium red

Pigment

49%

Ivory black

Pigment

47%

Ultramarine blue

Pigment

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)

5.5%

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.

Barbera

#8B031C

Oxblood

#800020

Sneaky Devil

#840014

Succubus

#990022

Elf Green

#0C8772

Korma

#87340C

Rose Bud Cherry

#870C5E

Bilbao

#21870C

Ultramarine

#0C2187

Salem

#0C8734

Fuzzy Wuzzy Brown

#C84E51

Temptress

#4B0000