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#633EB1 Color

#633EB1 is rgb(99, 62, 177) in RGB, hsl(259, 48%, 47%) in HSL, and about cmyk(44%, 65%, 0%, 31%) in CMYK. It has no registered color name of its own — the closest is Plump Purple (#5946B2), clearly related but distinguishable side by side at ΔE 6.76. White text is the more readable choice on this background.

#633EB1
HEX#633EB1
RGBrgb(99, 62, 177)
HSLhsl(259, 48%, 47%)
HSVhsv(259, 65%, 69%)
CMYKcmyk(44%, 65%, 0%, 31%)
OKLCHoklch(47.1% 0.174 293.4)
LABlab(35.78% 36.99 -56.63)
LCHlch(35.78% 67.64 303.15)

What #633EB1 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 #633EB1, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Plump Purple#5946B2ΔE 6.76Purple Heart#69359CΔE 9.23Rebecca Purple#663399ΔE 9.67Grape#6F2DA8ΔE 9.8Iris#5A4FCFΔE 11.6Slate Blue#6A5ACDΔE 11.64

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

#633EB1 Channel Values

How #633EB1 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 99 · G 62 · B 1778-bit channels as sent to the display
HSLH 259° · S 48% · L 47%Easiest model for building lighter and darker variants
HSVH 259° · S 65% · V 69%Matches the picker in most design tools
CMYKC 44% · M 65% · Y 0% · K 31%Approximate ink mix; confirm with an ICC profile before printing
Luminance7.36:1 vs white · 2.85:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #633EB1 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 text7.36:1AA normal AA large AAA normal
Fails AABlack text2.85:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #633EB1 in the contrast checker.

Colors That Go With #633EB1

Pairings derived from color-wheel relationships. The complementary color sits opposite #633EB1; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#633EB1
Complementary
#8DB13E
Analogous
#3E53B1
Analogous
#9C3EB1
Triadic
#B1633E
Triadic
#3EB163
Split comp.
#B19C3E
Split comp.
#53B13E

Tints & Shades of #633EB1

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

#7551C2
#8D70CD
#A28AD6
#B7A4DF
#CCBFE8
#E4DDF3

Shades

#56369B
#4A2E84
#3D266D
#2E1D53
#22153C
#150D26

Want a full 50-950 ramp with semantic roles? Generate design tokens from #633EB1.

How #633EB1 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#633EB1
Protanopia#4646B1
Protanomaly#5343B1
Deuteranopia#4D4DB1
Deuteranomaly#5647B1
Tritanopia#4D5858
Tritanomaly#574F85
Achromatopsia#565656

Test a full palette in the color blindness simulator.

Using #633EB1 in Code

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

CSS custom property--color-633eb1: #633EB1;
CSS backgroundbackground-color: #633EB1;
Tailwind configcolors: { 'color-633eb1': '#633EB1' }
SwiftUIColor(red: 0.388, green: 0.243, blue: 0.694)
Android XML<color name="color_633eb1">#633EB1</color>
SVG fillfill="#633EB1"

More Purple Colors

#633EB1 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024fdf8ff170b22fdf4ff1b0d35faf5ff1d0731fae8ff1e0033f6cfff20002ef3e8ff3000524020605414906600cc7008e78806ce9900cca11fffb19cd9c27affcebeefe0b2eb

#633EB1 Frequently Asked Questions

What color is #633EB1?

#633EB1 is a mid-tone purple — rgb(99, 62, 177) in RGB and hsl(259, 48%, 47%) in HSL. It carries no registered color name of its own; the closest named color is Plump Purple (#5946B2), which is clearly related but distinguishable side by side at a CIE76 distance of 6.76.

What is the RGB value of #633EB1?

#633EB1 is rgb(99, 62, 177) — red 99, green 62, and blue 177 on the 0-255 scale.

What is the CMYK value of #633EB1?

#633EB1 converts to approximately cmyk(44%, 65%, 0%, 31%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #633EB1 be black or white?

White text is the more readable choice. #633EB1 scores 7.36:1 against white and 2.85:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #633EB1 as a CSS color keyword?

No. #633EB1 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 rebeccapurple (#663399) at a CIE76 distance of 9.67, which is clearly related but distinguishable side by side.

Open #633EB1 in a Tool

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

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