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#2B15CB Color

#2B15CB is rgb(43, 21, 203) in RGB, hsl(247, 81%, 44%) in HSL, and about cmyk(79%, 90%, 0%, 20%) in CMYK. It has no registered color name of its own — the closest is Medium Blue (#0000CD), clearly related but distinguishable side by side at ΔE 8.46. White text is the more readable choice on this background.

#2B15CB
HEX#2B15CB
RGBrgb(43, 21, 203)
HSLhsl(247, 81%, 44%)
HSVhsv(247, 90%, 80%)
CMYKcmyk(79%, 90%, 0%, 20%)
OKLCHoklch(40.5% 0.248 271.7)
LABlab(25.85% 53.64 -88.49)
LCHlch(25.85% 103.47 301.22)

What #2B15CB 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 #2B15CB, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Blue#0000CDΔE 8.46Neon Blue#1B03A3ΔE 14.23Palatinate Blue#273BE2ΔE 14.38Iridescent Indigo#3C32CDΔE 14.87Zaffer (Zaffre)#0014A8ΔE 15.69Duke Blue#00009CΔE 16.25

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

#2B15CB Channel Values

How #2B15CB breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 43 · G 21 · B 2038-bit channels as sent to the display
HSLH 247° · S 81% · L 44%Easiest model for building lighter and darker variants
HSVH 247° · S 90% · V 80%Matches the picker in most design tools
CMYKC 79% · M 90% · Y 0% · K 20%Approximate ink mix; confirm with an ICC profile before printing
Luminance10.13:1 vs white · 2.07:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #2B15CB 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 text10.13:1AA normal AA large AAA normal
Fails AABlack text2.07:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #2B15CB in the contrast checker.

Colors That Go With #2B15CB

Pairings derived from color-wheel relationships. The complementary color sits opposite #2B15CB; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#2B15CB
Complementary
#B6CB15
Analogous
#155BCB
Analogous
#8515CB
Triadic
#CB2B15
Triadic
#15CB2B
Split comp.
#CB8515
Split comp.
#5BCB15

Tints & Shades of #2B15CB

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

#3921E8
#5642EB
#7767EF
#988CF3
#B9B1F7
#D6D1FA

Shades

#2512AF
#201098
#1A0D7D
#140A61
#0E0745
#0A052E

Want a full 50-950 ramp with semantic roles? Generate design tokens from #2B15CB.

How #2B15CB 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#2B15CB
Protanopia#1A1ACB
Protanomaly#2218CB
Deuteranopia#1E1ECB
Deuteranomaly#241BCB
Tritanopia#005151
Tritanomaly#004192
Achromatopsia#414141

Test a full palette in the color blindness simulator.

Using #2B15CB in Code

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

CSS custom property--color-2b15cb: #2B15CB;
CSS backgroundbackground-color: #2B15CB;
Tailwind configcolors: { 'color-2b15cb': '#2B15CB' }
SwiftUIColor(red: 0.169, green: 0.082, blue: 0.796)
Android XML<color name="color_2b15cb">#2B15CB</color>
SVG fillfill="#2B15CB"

More Blue Colors

#2B15CB sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#2B15CB Frequently Asked Questions

What color is #2B15CB?

#2B15CB is a mid-tone blue — rgb(43, 21, 203) in RGB and hsl(247, 81%, 44%) in HSL. It carries no registered color name of its own; the closest named color is Medium Blue (#0000CD), which is clearly related but distinguishable side by side at a CIE76 distance of 8.46.

What is the RGB value of #2B15CB?

#2B15CB is rgb(43, 21, 203) — red 43, green 21, and blue 203 on the 0-255 scale.

What is the CMYK value of #2B15CB?

#2B15CB converts to approximately cmyk(79%, 90%, 0%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #2B15CB be black or white?

White text is the more readable choice. #2B15CB scores 10.13:1 against white and 2.07:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #2B15CB as a CSS color keyword?

No. #2B15CB 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 mediumblue (#0000CD) at a CIE76 distance of 8.46, which is clearly related but distinguishable side by side.

Open #2B15CB in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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