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#A645C9 Color

#A645C9 is rgb(166, 69, 201) in RGB, hsl(284, 55%, 53%) in HSL, and about cmyk(17%, 66%, 0%, 21%) in CMYK. It has no registered color name of its own — the closest is Medium Orchid (#BA55D3), clearly related but distinguishable side by side at ΔE 7.25. White text is the more readable choice on this background.

#A645C9
HEX#A645C9
RGBrgb(166, 69, 201)
HSLhsl(284, 55%, 53%)
HSVhsv(284, 66%, 79%)
CMYKcmyk(17%, 66%, 0%, 21%)
OKLCHoklch(57.5% 0.207 315.8)
LABlab(47.35% 55.14 -51.49)
LCHlch(47.35% 75.44 316.96)

What #A645C9 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 #A645C9, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Orchid#BA55D3ΔE 7.25Dark Orchid#9932CCΔE 11.27Rich Lilac#B666D2ΔE 15.35Purple Plum#9C51B6ΔE 15.44Deep Fuchsia#C154C1ΔE 15.74Mauveine#8D029BΔE 15.86

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

#A645C9 Channel Values

How #A645C9 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 166 · G 69 · B 2018-bit channels as sent to the display
HSLH 284° · S 55% · L 53%Easiest model for building lighter and darker variants
HSVH 284° · S 66% · V 79%Matches the picker in most design tools
CMYKC 17% · M 66% · Y 0% · K 21%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.87:1 vs white · 4.32:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #A645C9 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 text4.87:1AA normal AA large AAA normal
Fails AABlack text4.32:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #A645C9 in the contrast checker.

Colors That Go With #A645C9

Pairings derived from color-wheel relationships. The complementary color sits opposite #A645C9; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#A645C9
Complementary
#68C945
Analogous
#6445C9
Analogous
#C945AA
Triadic
#C9A645
Triadic
#45C9A6
Split comp.
#AAC945
Split comp.
#45C964

Tints & Shades of #A645C9

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

#B15DD0
#BF79D8
#CA90DF
#D7ACE7
#E3C4EE
#F0DFF6

Shades

#9335B6
#7D2D9A
#67257E
#501D63
#3A1547
#230D2B

Want a full 50-950 ramp with semantic roles? Generate design tokens from #A645C9.

How #A645C9 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#A645C9
Protanopia#5F5FC9
Protanomaly#8156C9
Deuteranopia#7171C8
Deuteranomaly#8962C8
Tritanopia#986363
Tritanomaly#9E5997
Achromatopsia#717171

Test a full palette in the color blindness simulator.

Using #A645C9 in Code

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

CSS custom property--color-a645c9: #A645C9;
CSS backgroundbackground-color: #A645C9;
Tailwind configcolors: { 'color-a645c9': '#A645C9' }
SwiftUIColor(red: 0.651, green: 0.271, blue: 0.788)
Android XML<color name="color_a645c9">#A645C9</color>
SVG fillfill="#A645C9"

More Purple Colors

#A645C9 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024fdf8ff170b22fdf4ff1b0d35faf5ff1d0731fae8ff1e0033f6cfff20002ef3e8ff3000524020605414906600cc7008e78806ce9900cca11fffb19cd9c27affcebeefe0b2eb

#A645C9 Frequently Asked Questions

What color is #A645C9?

#A645C9 is a mid-tone purple — rgb(166, 69, 201) in RGB and hsl(284, 55%, 53%) in HSL. It carries no registered color name of its own; the closest named color is Medium Orchid (#BA55D3), which is clearly related but distinguishable side by side at a CIE76 distance of 7.25.

What is the RGB value of #A645C9?

#A645C9 is rgb(166, 69, 201) — red 166, green 69, and blue 201 on the 0-255 scale.

What is the CMYK value of #A645C9?

#A645C9 converts to approximately cmyk(17%, 66%, 0%, 21%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #A645C9 be black or white?

White text is the more readable choice. #A645C9 scores 4.87:1 against white and 4.32:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #A645C9 as a CSS color keyword?

No. #A645C9 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 mediumorchid (#BA55D3) at a CIE76 distance of 7.25, which is clearly related but distinguishable side by side.

Open #A645C9 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.