#0A0000 Color

#0A0000 is rgb(10, 0, 0) in RGB, hsl(0, 100%, 2%) in HSL, and about cmyk(0%, 100%, 100%, 96%) in CMYK. It has no registered color name of its own — the closest is Black (#000000), very hard to tell apart at ΔE 2.95. White text is the more readable choice on this background.

#0A0000

HEX#0A0000

RGBrgb(10, 0, 0)

HSLhsl(0, 100%, 2%)

HSVhsv(0, 100%, 4%)

CMYKcmyk(0%, 100%, 100%, 96%)

OKLCHoklch(9.1% 0.037 29.2)

LABlab(0.61% 2.71 0.97)

LCHlch(0.61% 2.88 19.70)

What #0A0000 Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #0A0000, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Black#000000ΔE 2.95 Vantablack#000100ΔE 3.19 Vampire Black#080808ΔE 3.29 Registration Black#000200ΔE 3.5 Jet Black#0A0A0AΔE 3.59 Smoky Black#100C08ΔE 3.61

Browse the full index of named colors A-Z or every red in the library.

#0A0000 Channel Values

How #0A0000 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 10 · G 0 · B 0	8-bit channels as sent to the display
HSL	H 0° · S 100% · L 2%	Easiest model for building lighter and darker variants
HSV	H 0° · S 100% · V 4%	Matches the picker in most design tools
CMYK	C 0% · M 100% · Y 100% · K 96%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	20.73:1 vs white · 1.01:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #0A0000 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text20.73:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text1.01:1AA normal ✗AA large ✗AAA normal ✗

Need a specific ratio against another background? Open #0A0000 in the contrast checker.

Colors That Go With #0A0000

Pairings derived from color-wheel relationships. The complementary color sits opposite #0A0000; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #0A0000

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

#0A0000

#0F0000

#140000

Want a full 50-950 ramp with semantic roles? Generate design tokens from #0A0000.

How #0A0000 Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#0A0000

Protanopia#020200

Protanomaly#050100

Deuteranopia#030300

Deuteranomaly#060200

Tritanopia#0A0000

Tritanomaly#0A0000

Achromatopsia#020202

Test a full palette in the color blindness simulator.

Using #0A0000 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-0a0000: #0A0000;

CSS backgroundbackground-color: #0A0000;

Tailwind configcolors: { 'color-0a0000': '#0A0000' }

SwiftUIColor(red: 0.039, green: 0.000, blue: 0.000)

Android XML<color name="color_0a0000">#0A0000</color>

SVG fillfill="#0A0000"

More Red Colors

#0A0000 sits in the redfamily. These are its neighbours across that family's full range, each with its own breakdown.

1f0000 fffafa 1f0005 fff5f5 1f0008 fff1f2 240000 fff1f0 240909 fff0f2 270707 ffedeb 4e0707 710f04 940000 a81c07 c09999 ce2029 e34234 ef98aa fadadd ff2056 ff6961 ffc1cc

#0A0000 Frequently Asked Questions

What color is #0A0000?

#0A0000 is a darkest red — rgb(10, 0, 0) in RGB and hsl(0, 100%, 2%) in HSL. It carries no registered color name of its own; the closest named color is Black (#000000), which is very hard to tell apart at a CIE76 distance of 2.95.

What is the RGB value of #0A0000?

#0A0000 is rgb(10, 0, 0) — red 10, green 0, and blue 0 on the 0-255 scale.

What is the CMYK value of #0A0000?

#0A0000 converts to approximately cmyk(0%, 100%, 100%, 96%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #0A0000 be black or white?

White text is the more readable choice. #0A0000 scores 20.73:1 against white and 1.01:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #0A0000 as a CSS color keyword?

No. #0A0000 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is black (#000000) at a CIE76 distance of 2.95, which is very hard to tell apart.

Open #0A0000 in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every red in the color library, the guide to shades of red, or the full color library.