#0B0123 Color

#0B0123 is rgb(11, 1, 35) in RGB, hsl(258, 94%, 7%) in HSL, and about cmyk(69%, 97%, 0%, 86%) in CMYK. It has no registered color name of its own — the closest is Maastricht Blue (#001C3D), visibly different at ΔE 12.52. White text is the more readable choice on this background.

#0B0123

HEX#0B0123

RGBrgb(11, 1, 35)

HSLhsl(258, 94%, 7%)

HSVhsv(258, 97%, 14%)

CMYKcmyk(69%, 97%, 0%, 86%)

OKLCHoklch(13.8% 0.072 291.3)

LABlab(1.79% 8.36 -18.25)

LCHlch(1.79% 20.08 294.61)

What #0B0123 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 #0B0123, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Maastricht Blue#001C3DΔE 12.52 Deep Navy#0B1F3AΔE 12.61 Dark Purple#301934ΔE 14.43 Oxford Blue#002147ΔE 15.59 Rich Black#010B13ΔE 16.67 Space Cadet#1D2951ΔE 17.78

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

#0B0123 Channel Values

How #0B0123 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 11 · G 1 · B 35	8-bit channels as sent to the display
HSL	H 258° · S 94% · L 7%	Easiest model for building lighter and darker variants
HSV	H 258° · S 97% · V 14%	Matches the picker in most design tools
CMYK	C 69% · M 97% · Y 0% · K 86%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	20.14:1 vs white · 1.04:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #0B0123 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 text20.14:1AA normal AA large AAA normal

Fails AABlack text1.04:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #0B0123 in the contrast checker.

Colors That Go With #0B0123

Pairings derived from color-wheel relationships. The complementary color sits opposite #0B0123; 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 #0B0123

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

Want a full 50-950 ramp with semantic roles? Generate design tokens from #0B0123.

How #0B0123 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#0B0123

Protanopia#030323

Protanomaly#060223

Deuteranopia#040423

Deuteranomaly#070323

Tritanopia#040808

Tritanomaly#070516

Achromatopsia#070707

Test a full palette in the color blindness simulator.

Using #0B0123 in Code

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

CSS custom property--color-0b0123: #0B0123;

CSS backgroundbackground-color: #0B0123;

Tailwind configcolors: { 'color-0b0123': '#0B0123' }

SwiftUIColor(red: 0.043, green: 0.004, blue: 0.137)

Android XML<color name="color_0b0123">#0B0123</color>

SVG fillfill="#0B0123"

More Purple Colors

#0B0123 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024 fdf8ff 170b22 fdf4ff 1b0d35 faf5ff 1d0731 fae8ff 1e0033 f6cfff 20002e f3e8ff 300052 402060 541490 6600cc 7008e7 8806ce 9900cc a11fff b19cd9 c27aff cebeef e0b2eb

#0B0123 Frequently Asked Questions

What color is #0B0123?

#0B0123 is a darkest purple — rgb(11, 1, 35) in RGB and hsl(258, 94%, 7%) in HSL. It carries no registered color name of its own; the closest named color is Maastricht Blue (#001C3D), which is visibly different at a CIE76 distance of 12.52.

What is the RGB value of #0B0123?

#0B0123 is rgb(11, 1, 35) — red 11, green 1, and blue 35 on the 0-255 scale.

What is the CMYK value of #0B0123?

#0B0123 converts to approximately cmyk(69%, 97%, 0%, 86%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #0B0123 be black or white?

White text is the more readable choice. #0B0123 scores 20.14:1 against white and 1.04:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #0B0123 as a CSS color keyword?

No. #0B0123 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 20.16, which is visibly different.

Open #0B0123 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 purple in the color library, the guide to shades of purple, or the full color library.