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#81A9FD Color

#81A9FD is rgb(129, 169, 253) in RGB, hsl(221, 97%, 75%) in HSL, and about cmyk(49%, 33%, 0%, 1%) in CMYK. It has no registered color name of its own — the closest is Perano (Infinitely Hot) (#94B1FF), clearly related but distinguishable side by side at ΔE 5.63. Black text is the more readable choice on this background.

#81A9FD
HEX#81A9FD
RGBrgb(129, 169, 253)
HSLhsl(221, 97%, 75%)
HSVhsv(221, 49%, 99%)
CMYKcmyk(49%, 33%, 0%, 1%)
OKLCHoklch(74% 0.13 264.1)
LABlab(68.95% 3.29 -46.66)
LCHlch(68.95% 46.77 274.03)

What #81A9FD 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 #81A9FD, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Perano (Infinitely Hot)#94B1FFΔE 5.63Cornflower Blue#6495EDΔE 8.49French Sky Blue#77B5FEΔE 9.6United Nations Blue#5B92E5ΔE 9.88Vista Blue#7C9ED9ΔE 13.78Little Boy Blue#6CA0DCΔE 14.13

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

#81A9FD Channel Values

How #81A9FD 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 169 · B 2538-bit channels as sent to the display
HSLH 221° · S 97% · L 75%Easiest model for building lighter and darker variants
HSVH 221° · S 49% · V 99%Matches the picker in most design tools
CMYKC 49% · M 33% · Y 0% · K 1%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.33:1 vs white · 9.03:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #81A9FD 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 text2.33:1AA normal AA large AAA normal
TextBlack text9.03:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #81A9FD in the contrast checker.

Colors That Go With #81A9FD

Pairings derived from color-wheel relationships. The complementary color sits opposite #81A9FD; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#81A9FD
Complementary
#FDD681
Analogous
#81E6FD
Analogous
#9881FD
Triadic
#FD81A9
Triadic
#A9FD81
Split comp.
#FD9881
Split comp.
#E6FD81

Tints & Shades of #81A9FD

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

#90B3FD
#A5C1FE
#B4CBFE
#C3D6FE
#D2E0FE
#E6EEFF

Shades

#4F86FC
#1D63FC
#034AE2
#0338AB
#022779
#011746

Want a full 50-950 ramp with semantic roles? Generate design tokens from #81A9FD.

How #81A9FD 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#81A9FD
Protanopia#A3A3FD
Protanomaly#97A5FD
Deuteranopia#9D9DFE
Deuteranomaly#93A2FD
Tritanopia#6AB6B6
Tritanomaly#74B1D6
Achromatopsia#AAAAAA

Test a full palette in the color blindness simulator.

Using #81A9FD in Code

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

CSS custom property--color-81a9fd: #81A9FD;
CSS backgroundbackground-color: #81A9FD;
Tailwind configcolors: { 'color-81a9fd': '#81A9FD' }
SwiftUIColor(red: 0.506, green: 0.663, blue: 0.992)
Android XML<color name="color_81a9fd">#81A9FD</color>
SVG fillfill="#81A9FD"

More Blue Colors

#81A9FD sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#81A9FD Frequently Asked Questions

What color is #81A9FD?

#81A9FD is a light blue — rgb(129, 169, 253) in RGB and hsl(221, 97%, 75%) in HSL. It carries no registered color name of its own; the closest named color is Perano (Infinitely Hot) (#94B1FF), which is clearly related but distinguishable side by side at a CIE76 distance of 5.63.

What is the RGB value of #81A9FD?

#81A9FD is rgb(129, 169, 253) — red 129, green 169, and blue 253 on the 0-255 scale.

What is the CMYK value of #81A9FD?

#81A9FD converts to approximately cmyk(49%, 33%, 0%, 1%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #81A9FD be black or white?

Black text is the more readable choice. #81A9FD scores 2.33:1 against white and 9.03:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #81A9FD as a CSS color keyword?

No. #81A9FD 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 cornflowerblue (#6495ED) at a CIE76 distance of 8.49, which is clearly related but distinguishable side by side.

Open #81A9FD 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.