Skip to content

#817CFD Color

#817CFD is rgb(129, 124, 253) in RGB, hsl(242, 97%, 74%) in HSL, and about cmyk(49%, 51%, 0%, 1%) in CMYK. It has no registered color name of its own — the closest is Medium Slate Blue (#7B68EE), clearly related but distinguishable side by side at ΔE 8.71. Black text is the more readable choice on this background.

#817CFD
HEX#817CFD
RGBrgb(129, 124, 253)
HSLhsl(242, 97%, 74%)
HSVhsv(242, 51%, 99%)
CMYKcmyk(49%, 51%, 0%, 1%)
OKLCHoklch(65.4% 0.186 281.7)
LABlab(57.35% 27.76 -65.00)
LCHlch(57.35% 70.68 293.13)

What #817CFD 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 #817CFD, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Slate Blue#7B68EEΔE 8.71Vantg Blue#5271FFΔE 12.44Slate Blue#6A5ACDΔE 14.37Bluetiful#3C69E7ΔE 14.53Royal Blue#4169E1ΔE 14.62Medium Purple#9370DBΔE 15.19

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

#817CFD Channel Values

How #817CFD 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 129 · G 124 · B 2538-bit channels as sent to the display
HSLH 242° · S 97% · L 74%Easiest model for building lighter and darker variants
HSVH 242° · S 51% · V 99%Matches the picker in most design tools
CMYKC 49% · M 51% · Y 0% · K 1%Approximate ink mix; confirm with an ICC profile before printing
Luminance3.37:1 vs white · 6.23:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #817CFD 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.

Fails AAWhite text3.37:1AA normal AA large AAA normal
TextBlack text6.23:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #817CFD in the contrast checker.

Colors That Go With #817CFD

Pairings derived from color-wheel relationships. The complementary color sits opposite #817CFD; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#817CFD
Complementary
#F9FD7C
Analogous
#7CB8FD
Analogous
#C17CFD
Triadic
#FD817C
Triadic
#7CFD81
Split comp.
#FDC17C
Split comp.
#B8FD7C

Tints & Shades of #817CFD

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

#8F8BFD
#A3A0FE
#B1AFFE
#C5C3FE
#D3D2FE
#E7E6FF

Shades

#504AFC
#2018FB
#0B03DD
#0803AB
#060279
#030146

Want a full 50-950 ramp with semantic roles? Generate design tokens from #817CFD.

How #817CFD 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#817CFD
Protanopia#7D7DFD
Protanomaly#7F7DFD
Deuteranopia#7E7EFD
Deuteranomaly#7F7DFD
Tritanopia#619595
Tritanomaly#6F8CC7
Achromatopsia#8C8C8C

Test a full palette in the color blindness simulator.

Using #817CFD in Code

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

CSS custom property--color-817cfd: #817CFD;
CSS backgroundbackground-color: #817CFD;
Tailwind configcolors: { 'color-817cfd': '#817CFD' }
SwiftUIColor(red: 0.506, green: 0.486, blue: 0.992)
Android XML<color name="color_817cfd">#817CFD</color>
SVG fillfill="#817CFD"

More Blue Colors

#817CFD sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#817CFD Frequently Asked Questions

What color is #817CFD?

#817CFD is a light blue — rgb(129, 124, 253) in RGB and hsl(242, 97%, 74%) in HSL. It carries no registered color name of its own; the closest named color is Medium Slate Blue (#7B68EE), which is clearly related but distinguishable side by side at a CIE76 distance of 8.71.

What is the RGB value of #817CFD?

#817CFD is rgb(129, 124, 253) — red 129, green 124, and blue 253 on the 0-255 scale.

What is the CMYK value of #817CFD?

#817CFD converts to approximately cmyk(49%, 51%, 0%, 1%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #817CFD be black or white?

Black text is the more readable choice. #817CFD scores 3.37:1 against white and 6.23:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #817CFD as a CSS color keyword?

No. #817CFD 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 8.71, which is clearly related but distinguishable side by side.

Open #817CFD 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.