Photo in the color Powder blue (web)
Pictured: Powder blue (web), the closest color we have a photo of (#B0E0E6)
rgb(174, 224, 228)
#AEE0E4

Opal #AEE0E4 RGB Color Code

Name from the community color list.

Opal (#AEE0E4) is a muted, light cyan. In RGB it is made of 68% red, 88% green and 89% blue (R 174, G 224, B 228). The blue channel is the strongest. In HSL it has a hue of 184°, 50% saturation and 79% lightness. Its relative luminance is 0.679, so black text is easier to read on top of it. For print, a rough CMYK match is 24% cyan, 2% magenta, 0% yellow and 11% black. Check it against your printer's ICC profile before you print. It is a cool color. It goes well with warm oranges and reds for contrast. For a calm, matching look, use nearby cool tones.

Open in color picker
ConverterPalette generatorContrast checkerGradient builderUI previewSimilar names

Opal color codes

#AEE0E4 in every common color format. Click a value to copy it.

FormatValueNotesCopy
HEX #AEE0E4 Valid CSS
RGB rgb(174, 224, 228) Valid CSS
HSL hsl(184, 50%, 79%) Valid CSS
HSV / HSB hsv(184, 24%, 89%) Not a CSS format
HWB hwb(184 68% 11%) Valid CSS
CMYK cmyk(24%, 2%, 0%, 11%) Approximate (no ICC profile)
OKLCH oklch(87.32% 0.0517 202.35) Valid CSS
OKLab oklab(87.32% -0.0479 -0.0197) Valid CSS
CIELAB lab(85.78% -16.02 -7.53) D50, as in CSS
CIELCH lch(85.78% 17.7 205.17) Valid CSS
Display P3 color(display-p3 0.7223 0.8728 0.8899) Valid CSS
XYZ (D65) color(xyz-d65 0.5811 0.6791 0.8345) Valid CSS
Decimal 11460836 Integer (0xRRGGBB)

CMYK here is a rough screen match without an ICC profile. See CMYK and print. Relative luminance: 0.6791. Nearest web-safe color: #99CCCC.

Mix Opal with other colors

See what #AEE0E4 makes with red paint, under a green light, printed with cyan ink and in a digital blend with blue. Click a picture to change the colors and amounts in the color mixer.

PaintOpal and red paintOpen in the color mixer
LightOpal and green lightOpen in the color mixer
PrintOpal and cyan inkOpen in the color mixer
DigitalOpal blended with blueOpen in the color mixer

Use Opal in your code

Ready to paste into CSS, Sass, Tailwind, iOS, Android and Flutter. Click the icon to copy a line.

WhereCodeCopy
CSS variable--opal: #AEE0E4;
Sass variable$opal: #AEE0E4;
Tailwind CSS v4@theme { --color-opal: #AEE0E4; }
Tailwind CSS v3 configcolors: { 'opal': '#AEE0E4' }
SwiftUIColor(red: 0.682, green: 0.878, blue: 0.894)
UIKitUIColor(red: 0.682, green: 0.878, blue: 0.894, alpha: 1)
Android XML<color name="opal">#FFAEE0E4</color>
Flutter and Jetpack ComposeColor(0xFFAEE0E4)

Accessibility and contrast

Black text works best on #AEE0E4 (14.58:1, AAA). Here is how #AEE0E4 does as a text color:

Large heading text
Body text at 16px. The quick brown fox jumps over the lazy dog.
1.44:1 on white
APCA Lc 21
Fails AATry #4F7E82
Large heading text
Body text at 16px. The quick brown fox jumps over the lazy dog.
14.58:1 on black
APCA Lc -82
AAA

Check this color against any background in the contrast checker. WCAG ratios and APCA Lc values measure different things, so one can't stand in for the other. Learn more.

How people with color blindness see Opal

#AEE0E4 next to its complement and its two triadic colors, as seen with each type of color blindness.

  • Normal visionhow most people see it
  • Protanopiano red cones, about 1% of men
  • Deuteranopiano green cones, the most common type
  • Tritanopiano blue cones, very rare
  • Achromatopsiano color at all, very rare

With deuteranopia, #AEE0E4 and #E4B2AE look much alike. With deuteranopia, #AEE0E4 and #E4AEE0 look much alike. Don't use these colors alone to tell things apart, for example in a chart. Add labels, patterns or a difference in lightness. Try your own colors in the color blindness simulator.

About the color Opal

Named after a gemstone

The color takes its name from the opal. This stone is a form of silica that holds water inside it, from 3% to 21% of its weight. Precious opals flash many colors as you turn them. A single flat code can only hint at one of those colors.

Two codes for opal

Wikipedia's alphabetical list of colors gives opal as #A8C3BC, a dull gray green. The opal on this site is #AEE0E4, and it is a different color. It is paler and much bluer, a bit like the milky blue of some opals. It comes from an open online name list that does not say where the code came from.

Close neighbors on screen are powder blue and pale turquoise.

Opal in a user interface

A sample app screen with #AEE0E4 as the main color, on a light and a dark theme.

Light theme

Dark theme

Buttons and bars use #AEE0E4 as it is. On the light theme, #AEE0E4 is too hard to read as text (1.44:1), so links, the badge and outline text use #4F7E82 there (4.53:1). Build a full color scheme around it in the UI color preview.

Color harmonies for Opal

These schemes turn the hue of #AEE0E4 around the color wheel. Each swatch links to its own page.

Complementary

Two colors on opposite sides of the wheel. This gives the most contrast.

Open palette
this#AEE0E4#E4B2AE

Analogous

Hues that sit next to each other and look good together.

Open palette
#AEE4CDthis#AEE0E4#AEC5E4

Triadic

Three hues spaced evenly around the wheel. Bold, but still balanced.

Open palette
this#AEE0E4#E4AEE0#E0E4AE

Split complementary

A base color plus the two hues on each side of its opposite. Strong contrast that clashes less.

Open palette
this#AEE0E4#E4AEC5#E4CDAE

Tetradic (rectangle)

Two pairs of opposite colors. Let one color lead and use the others less.

Open palette
this#AEE0E4#B2AEE4#E4B2AE#E0E4AE

Square

Four hues 90° apart, spread evenly around the wheel.

Open palette
this#AEE0E4#CDAEE4#E4B2AE#C5E4AE

Monochromatic

One hue at different levels of lightness and saturation.

Open palette
#1A494D#2E848B#49B9C2#87D1D7#C6E9EC

Gradients with Opal

Four CSS gradients made from #AEE0E4. Copy the code, or open one in the gradient generator to change it.

Soft tint

From a pale tint to the full color.

background: linear-gradient(90deg, #EFF9FA, #AEE0E4);

Edit in the gradient generator

Deep shade

The color fading into a dark shade.

background: linear-gradient(180deg, #AEE0E4, #2E3E3F);

Edit in the gradient generator

Analogous

Its two neighbors on the color wheel.

background: linear-gradient(135deg, #AEE4CD, #AEE0E4, #AEC5E4);

Edit in the gradient generator

Triadic

A bold blend with a triadic color, through a clean middle.

background: linear-gradient(135deg, #AEE0E4, #CDC8E2, #E4AEE0);

Edit in the gradient generator

Shades, tints and tones of Opal

Shades are darker, tints are lighter and tones are grayer. We make them in OKLCH so the steps look even. Hover a step to see its code, or click it to open it.

Design system scale (50 to 950)

Opal sits at step 200. Export the full scale as CSS variables or Tailwind tokens from the picker.

  1. 50
    EAFBFC
  2. 100
    DBF2F4
  3. 200
    AEE0E4
  4. 300
    A2CACD
  5. 400
    7FADB0
  6. 500
    609094
  7. 600
    477579
  8. 700
    335D61
  9. 800
    25494C
  10. 900
    1B3537
  11. 950
    122021

Closest RAL, Tailwind and CSS colors

The nearest match to #AEE0E4 in three color systems that designers and builders use.

RAL ClassicRAL 9018 Papyrus white#CFD3CD, close (ΔE 5.0)Tailwind CSSsky-200 #BAE6FD, very close (ΔE 3.9)CSS color namespowderblue #B0E0E6, exact match (ΔE 0.4)

ΔE is the distance in OKLab: under 2 is hard to see, over 10 is a clearly different color. Browse all RAL colors, the Tailwind palette or the 148 CSS color names. RAL values on screens are only a guide, so check a real color chart before you order paint.

The named colors that look closest to this one (ΔE in OKLab). Browse all shades of cyan or search the color library.