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#6643DB Color

#6643DB is rgb(102, 67, 219) in RGB, hsl(254, 68%, 56%) in HSL, and about cmyk(53%, 69%, 0%, 14%) in CMYK. It has no registered color name of its own — the closest is Majorelle Blue (#6050DC), clearly related but distinguishable side by side at ΔE 8.82. White text is the more readable choice on this background.

#6643DB
HEX#6643DB
RGBrgb(102, 67, 219)
HSLhsl(254, 68%, 56%)
HSVhsv(254, 69%, 86%)
CMYKcmyk(53%, 69%, 0%, 14%)
OKLCHoklch(51.5% 0.218 286.6)
LABlab(40.04% 44.69 -74.10)
LCHlch(40.04% 86.53 301.09)

What #6643DB 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 #6643DB, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Majorelle Blue#6050DCΔE 8.82Iridescent Indigo#3C32CDΔE 10.11Lavender Indigo#9457EBΔE 12.98Iris#5A4FCFΔE 14.33Very Light Blue#6666FFΔE 14.75Palatinate Blue#273BE2ΔE 14.84

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

#6643DB Channel Values

How #6643DB 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 102 · G 67 · B 2198-bit channels as sent to the display
HSLH 254° · S 68% · L 56%Easiest model for building lighter and darker variants
HSVH 254° · S 69% · V 86%Matches the picker in most design tools
CMYKC 53% · M 69% · Y 0% · K 14%Approximate ink mix; confirm with an ICC profile before printing
Luminance6.19:1 vs white · 3.39:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #6643DB 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 text6.19:1AA normal AA large AAA normal
Fails AABlack text3.39:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #6643DB in the contrast checker.

Colors That Go With #6643DB

Pairings derived from color-wheel relationships. The complementary color sits opposite #6643DB; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#6643DB
Complementary
#B7DB43
Analogous
#436BDB
Analogous
#B243DB
Triadic
#DB6643
Triadic
#43DB66
Split comp.
#DBB243
Split comp.
#6BDB43

Tints & Shades of #6643DB

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

#7B5CE0
#9076E5
#A590EA
#BAA9EF
#CEC3F4
#E3DDF8

Shades

#5028D2
#4321B0
#371C92
#2A156F
#1F1051
#12092F

Want a full 50-950 ramp with semantic roles? Generate design tokens from #6643DB.

How #6643DB 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#6643DB
Protanopia#4A4ADB
Protanomaly#5748DB
Deuteranopia#5151DB
Deuteranomaly#5A4CDB
Tritanopia#3F6868
Tritanomaly#515BA3
Achromatopsia#616161

Test a full palette in the color blindness simulator.

Using #6643DB in Code

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

CSS custom property--color-6643db: #6643DB;
CSS backgroundbackground-color: #6643DB;
Tailwind configcolors: { 'color-6643db': '#6643DB' }
SwiftUIColor(red: 0.400, green: 0.263, blue: 0.859)
Android XML<color name="color_6643db">#6643DB</color>
SVG fillfill="#6643DB"

More Blue Colors

#6643DB sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#6643DB Frequently Asked Questions

What color is #6643DB?

#6643DB is a mid-tone blue — rgb(102, 67, 219) in RGB and hsl(254, 68%, 56%) in HSL. It carries no registered color name of its own; the closest named color is Majorelle Blue (#6050DC), which is clearly related but distinguishable side by side at a CIE76 distance of 8.82.

What is the RGB value of #6643DB?

#6643DB is rgb(102, 67, 219) — red 102, green 67, and blue 219 on the 0-255 scale.

What is the CMYK value of #6643DB?

#6643DB converts to approximately cmyk(53%, 69%, 0%, 14%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #6643DB be black or white?

White text is the more readable choice. #6643DB scores 6.19:1 against white and 3.39:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #6643DB as a CSS color keyword?

No. #6643DB 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 mediumslateblue (#7B68EE) at a CIE76 distance of 17.39, which is visibly different.

Open #6643DB 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.