#28005B Color

#28005B is rgb(40, 0, 91) in RGB, hsl(266, 100%, 18%) in HSL, and about cmyk(56%, 100%, 0%, 64%) in CMYK. It has no registered color name of its own — the closest is Persian Indigo (#32127A), visibly different at ΔE 11.07. White text is the more readable choice on this background.

#28005B

HEX#28005B

RGBrgb(40, 0, 91)

HSLhsl(266, 100%, 18%)

HSVhsv(266, 100%, 36%)

CMYKcmyk(56%, 100%, 0%, 64%)

OKLCHoklch(24.8% 0.138 292.7)

LABlab(9.85% 35.02 -45.36)

LCHlch(9.85% 57.31 307.67)

What #28005B 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 #28005B, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Persian Indigo#32127AΔE 11.07 Midnight Blue#191970ΔE 11.78 Petunia#470659ΔE 13.86 Spanish Violet#4C2882ΔE 15.55 KSU Purple#512888ΔE 16.55 Indigo#4B0082ΔE 17.92

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

#28005B Channel Values

How #28005B 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 40 · G 0 · B 91	8-bit channels as sent to the display
HSL	H 266° · S 100% · L 18%	Easiest model for building lighter and darker variants
HSV	H 266° · S 100% · V 36%	Matches the picker in most design tools
CMYK	C 56% · M 100% · Y 0% · K 64%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	16.92:1 vs white · 1.24:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #28005B 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 text16.92:1AA normal AA large AAA normal

Fails AABlack text1.24:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #28005B in the contrast checker.

Colors That Go With #28005B

Pairings derived from color-wheel relationships. The complementary color sits opposite #28005B; 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 #28005B

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 #28005B.

How #28005B 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#28005B

Protanopia#0C0C5B

Protanomaly#1B075B

Deuteranopia#14145B

Deuteranomaly#1E0E5B

Tritanopia#161E1E

Tritanomaly#1E163F

Achromatopsia#1D1D1D

Test a full palette in the color blindness simulator.

Using #28005B in Code

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

CSS custom property--color-28005b: #28005B;

CSS backgroundbackground-color: #28005B;

Tailwind configcolors: { 'color-28005b': '#28005B' }

SwiftUIColor(red: 0.157, green: 0.000, blue: 0.357)

Android XML<color name="color_28005b">#28005B</color>

SVG fillfill="#28005B"

More Purple Colors

#28005B 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

#28005B Frequently Asked Questions

What color is #28005B?

#28005B is a darkest purple — rgb(40, 0, 91) in RGB and hsl(266, 100%, 18%) in HSL. It carries no registered color name of its own; the closest named color is Persian Indigo (#32127A), which is visibly different at a CIE76 distance of 11.07.

What is the RGB value of #28005B?

#28005B is rgb(40, 0, 91) — red 40, green 0, and blue 91 on the 0-255 scale.

What is the CMYK value of #28005B?

#28005B converts to approximately cmyk(56%, 100%, 0%, 64%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #28005B be black or white?

White text is the more readable choice. #28005B scores 16.92:1 against white and 1.24:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #28005B as a CSS color keyword?

No. #28005B 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 midnightblue (#191970) at a CIE76 distance of 11.78, which is visibly different.

Open #28005B 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.