#51001a

Castro

Closest match (98% match)

Color formats

RGB

rgb(81, 0, 26)

Red, Green, Blue components

HSL

hsl(341, 100%, 16%)

Hue, Saturation, Lightness

CMYK

cmyk(0, 100, 68, 68)

Print color encoding

Luminance

0.018

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#51001a

#005137

Analogous (Adjacent)

#510042

#51001a

#510f00

Triadic

#51001a

#1a5100

#001a51

Split complementary

#51001a

#00510f

#004251

Complete conversion table

HEX

#51001A

RGB

rgb(81,0,26)

RGBA

rgba(81,0,26, 1)

HSL

hsl(340.74,100%,15.88%)

OKLCH (Modern CSS)

oklch(0.28 0.11 11.3)

CSS Variable

--color: #51001a;

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

15.39

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.36

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#51001a#0b0c1a

ORIG

SIM

Deuteranopia (green)

#51001a#3c411a

ORIG

SIM

Tritanopia (blue)

#51001a#4d2326

ORIG

SIM

Monochrome (color blind)

#51001a#252525

Mixing guide

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

MIXING PALETTE

68%

27%

RYB PIGMENTS

Ivory black

Pigment

68%

Cadmium red

Pigment

27%

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

Non-spectral color

No single wavelength

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)

1.8%

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.

Merguez

#650021

Plum Cheese

#670728

What We Do in the Shadows

#441122

English Breakfast

#441111

Aqua Deep

#005137

Indian Tan

#510F00

Blackberry

#510042

Crusoe

#1A5100

Prussian Blue

#001A51

Crusoe

#00510F

Solid Pink

#8C3A48

Temptress

#2B0000