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#81B2DA Color

#81B2DA is rgb(129, 178, 218) in RGB, hsl(207, 55%, 68%) in HSL, and about cmyk(41%, 18%, 0%, 15%) in CMYK. It has no registered color name of its own — the closest is Aero (#7CB9E8), clearly related but distinguishable side by side at ΔE 5.2. Black text is the more readable choice on this background.

#81B2DA
HEX#81B2DA
RGBrgb(129, 178, 218)
HSLhsl(207, 55%, 68%)
HSVhsv(207, 41%, 85%)
CMYKcmyk(41%, 18%, 0%, 15%)
OKLCHoklch(74.4% 0.078 243.7)
LABlab(70.21% -9.09 -25.74)
LCHlch(70.21% 27.30 250.56)

What #81B2DA 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 #81B2DA, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Aero#7CB9E8ΔE 5.2Iceberg#71A6D2ΔE 5.23Air Superiority Blue#72A0C1ΔE 7.57Light Cobalt Blue#88ACE0ΔE 7.99Cerulean Frost#6D9BC3ΔE 8.45Pale Cerulean#9BC4E2ΔE 9.08

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

#81B2DA Channel Values

How #81B2DA 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 178 · B 2188-bit channels as sent to the display
HSLH 207° · S 55% · L 68%Easiest model for building lighter and darker variants
HSVH 207° · S 41% · V 85%Matches the picker in most design tools
CMYKC 41% · M 18% · Y 0% · K 15%Approximate ink mix; confirm with an ICC profile before printing
Luminance2.25:1 vs white · 9.31:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #81B2DA 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 text2.25:1AA normal AA large AAA normal
TextBlack text9.31:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #81B2DA in the contrast checker.

Colors That Go With #81B2DA

Pairings derived from color-wheel relationships. The complementary color sits opposite #81B2DA; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#81B2DA
Complementary
#DAA981
Analogous
#81DAD6
Analogous
#8185DA
Triadic
#DA81B2
Triadic
#B2DA81
Split comp.
#DA8185
Split comp.
#DAD681

Tints & Shades of #81B2DA

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

#90BCDF
#A4C8E5
#B4D1E9
#C4DBEE
#D4E4F2
#E7F1F8

Shades

#5D9CD0
#3987C6
#2F6EA2
#24537B
#193B57
#0F2333

Want a full 50-950 ramp with semantic roles? Generate design tokens from #81B2DA.

How #81B2DA 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#81B2DA
Protanopia#ABABDA
Protanomaly#9CAEDA
Deuteranopia#A4A4DB
Deuteranomaly#97AADB
Tritanopia#78B8B8
Tritanomaly#7CB5C6
Achromatopsia#ADADAD

Test a full palette in the color blindness simulator.

Using #81B2DA in Code

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

CSS custom property--color-81b2da: #81B2DA;
CSS backgroundbackground-color: #81B2DA;
Tailwind configcolors: { 'color-81b2da': '#81B2DA' }
SwiftUIColor(red: 0.506, green: 0.698, blue: 0.855)
Android XML<color name="color_81b2da">#81B2DA</color>
SVG fillfill="#81B2DA"

More Blue Colors

#81B2DA sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#81B2DA Frequently Asked Questions

What color is #81B2DA?

#81B2DA is a light blue — rgb(129, 178, 218) in RGB and hsl(207, 55%, 68%) in HSL. It carries no registered color name of its own; the closest named color is Aero (#7CB9E8), which is clearly related but distinguishable side by side at a CIE76 distance of 5.2.

What is the RGB value of #81B2DA?

#81B2DA is rgb(129, 178, 218) — red 129, green 178, and blue 218 on the 0-255 scale.

What is the CMYK value of #81B2DA?

#81B2DA converts to approximately cmyk(41%, 18%, 0%, 15%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #81B2DA be black or white?

Black text is the more readable choice. #81B2DA scores 2.25:1 against white and 9.31:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #81B2DA as a CSS color keyword?

No. #81B2DA 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 lightskyblue (#87CEFA) at a CIE76 distance of 11.06, which is visibly different.

Open #81B2DA 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.