#a10d00

Bright Red

Closest match (97% match)

Color formats

RGB

rgb(161, 13, 0)

Red, Green, Blue components

HSL

hsl(5, 100%, 32%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 92, 100, 37)

Print color encoding

Luminance

0.079

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#a10d00

#0094a1

Analogous (Adjacent)

#a10043

#a10d00

#a15e00

Triadic

#a10d00

#00a10d

#0d00a1

Split complementary

#a10d00

#00a15e

#0043a1

Complete conversion table

HEX

#A10D00

RGB

rgb(161,13,0)

RGBA

rgba(161,13,0, 1)

HSL

hsl(4.84,100%,31.57%)

OKLCH (Modern CSS)

oklch(0.45 0.18 30.4)

CSS Variable

--color: #a10d00;

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

8.16

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.57

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#a10d00#070700

ORIG

SIM

Deuteranopia (green)

#a10d00#647100

ORIG

SIM

Tritanopia (blue)

#a10d00#9a4b53

ORIG

SIM

Monochrome (color blind)

#a10d00#6b463d

Mixing guide

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

MIXING PALETTE

58%

37%

RYB PIGMENTS

Cadmium red

Pigment

58%

Ivory black

Pigment

37%

Cadmium yellow

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)

7.9%

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.

Gory Red

#A30800

Cacodemon Red

#9F0000

Kid Icarus

#A81000

Heartbeat

#AA0000

Persian Green

#0094A1

Chelsea Gem

#A15E00

Fresh Eggplant

#A10043

Japanese Laurel

#00A10D

Navy Blue

#0D00A1

Green Haze

#00A15E

Cinnabar

#E55334

Rosewood

#620000