#4B51AA Color

#4B51AA is rgb(75, 81, 170) in RGB, hsl(236, 39%, 48%) in HSL, and about cmyk(56%, 52%, 0%, 33%) in CMYK. It has no registered color name of its own — the closest is Violet-blue (#324AB2), visibly different at ΔE 10.29. White text is the more readable choice on this background.

#4B51AA

HEX#4B51AA

RGBrgb(75, 81, 170)

HSLhsl(236, 39%, 48%)

HSVhsv(236, 56%, 67%)

CMYKcmyk(56%, 52%, 0%, 33%)

OKLCHoklch(47.8% 0.14 276.8)

LABlab(37.66% 18.24 -49.59)

LCHlch(37.66% 52.84 290.19)

What #4B51AA 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 #4B51AA, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Violet-blue#324AB2ΔE 10.29 Indigo (Crayola)#4F69C6ΔE 10.49 Dark Slate Blue#483D8BΔE 10.55 Iron Indigo#184FA1ΔE 11.46 Cobalt Blue#0047ABΔE 12.46 Cerulean Blue#2A52BEΔE 12.53

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

#4B51AA Channel Values

How #4B51AA 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 75 · G 81 · B 170	8-bit channels as sent to the display
HSL	H 236° · S 39% · L 48%	Easiest model for building lighter and darker variants
HSV	H 236° · S 56% · V 67%	Matches the picker in most design tools
CMYK	C 56% · M 52% · Y 0% · K 33%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	6.87:1 vs white · 3.06:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #4B51AA 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 text6.87:1AA normal AA large AAA normal

Fails AABlack text3.06:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #4B51AA in the contrast checker.

Colors That Go With #4B51AA

Pairings derived from color-wheel relationships. The complementary color sits opposite #4B51AA; 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 #4B51AA

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 #4B51AA.

How #4B51AA 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#4B51AA

Protanopia#5050AA

Protanomaly#4E50AA

Deuteranopia#4F4FAA

Deuteranomaly#4D50AA

Tritanopia#306262

Tritanomaly#3D5C85

Achromatopsia#5A5A5A

Test a full palette in the color blindness simulator.

Using #4B51AA in Code

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

CSS custom property--color-4b51aa: #4B51AA;

CSS backgroundbackground-color: #4B51AA;

Tailwind configcolors: { 'color-4b51aa': '#4B51AA' }

SwiftUIColor(red: 0.294, green: 0.318, blue: 0.667)

Android XML<color name="color_4b51aa">#4B51AA</color>

SVG fillfill="#4B51AA"

More Blue Colors

#4B51AA sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024 fafaff 00002e f9fafb 000033 f8fafc 000038 f8f8ff 000042 f5faff 000047 f5f5ff 002147 007dfa 0f52ba 1c39bb 2a3439 372aac 4e3cc3 64609a 7abdff 979aaa b8dbff d6d6ff

#4B51AA Frequently Asked Questions

What color is #4B51AA?

#4B51AA is a mid-tone blue — rgb(75, 81, 170) in RGB and hsl(236, 39%, 48%) in HSL. It carries no registered color name of its own; the closest named color is Violet-blue (#324AB2), which is visibly different at a CIE76 distance of 10.29.

What is the RGB value of #4B51AA?

#4B51AA is rgb(75, 81, 170) — red 75, green 81, and blue 170 on the 0-255 scale.

What is the CMYK value of #4B51AA?

#4B51AA converts to approximately cmyk(56%, 52%, 0%, 33%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #4B51AA be black or white?

White text is the more readable choice. #4B51AA scores 6.87:1 against white and 3.06:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #4B51AA as a CSS color keyword?

No. #4B51AA 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 darkslateblue (#483D8B) at a CIE76 distance of 10.55, which is visibly different.

Open #4B51AA in a Tool

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