#81DDFB
Closest named color: Sky Blue (#87CEEB). oklch(85.1% 0.097 221.1), rgb(129, 221, 251).
Aa
Black text reads best on this color (13.66:1).
About this color
#81DDFB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.097 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Sky Blue (#87CEEB), ΔE 0.040 away. Black text reads best on it, at 13.66:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Sky Blue (#87CEEB) |
| Black text | 13.66:1 |
| White text | 1.53:1 |
Values
| HEX | #81DDFB |
| RGB | rgb(129, 221, 251) |
| HSL | hsl(195, 94%, 75%) |
| OKLCH | oklch(85.1% 0.097 221.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #81DDFB | 1.53:1 | Fails | Lc -27.9 | Dividers and decoration only |
| Black text on #81DDFB | 13.66:1 | AAA | Lc 79.1 | Fine for body text |
| #81DDFB text on white | 1.53:1 | Fails | Lc 24.6 | Dividers and decoration only |
| #81DDFB text on black | 13.66:1 | AAA | Lc -78.5 | Fine for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 200.
-
Step 50
50
#EAF8FD
oklch(97% 0.016 221.1)
-
Step 100
100
#D1F0FB
oklch(93.6% 0.036 221.2)
-
Step 200
200 (this color)
#81DDFB
oklch(85.1% 0.097 221.1)
-
Step 300
300
#4FD3F9
oklch(81% 0.125 220.7)
-
Step 400
400
#00B2D9
oklch(70.7% 0.13 221)
-
Step 500
500
#0099BB
oklch(63.2% 0.116 221)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#81DDFB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #CBD8FD | 0.081 |
| Deuteranopia (no green cones) | #B9CAFB | 0.074 |
| Tritanopia (no blue cones) | #3EE7E6 | 0.063 |
| Achromatopsia (no color) | #D0D0D0 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81DDFB
#81DDFB
oklch(85.1% 0.097 221.1)
- #FFBCA3
#FFBCA3
oklch(85.1% 0.085 41.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #81DDFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky Blue #87CEEB ΔE 0.040
- Light Sky Blue #87CEFA ΔE 0.040
- Robin's Egg #6DEDFD ΔE 0.043
- Baby Blue #A2CFFE ΔE 0.048
- Light Blue #ADD8E6 ΔE 0.049
- Sky #82CAFC ΔE 0.052
- Celeste #A8DADC ΔE 0.053
- Robin Egg Blue #8AF1FE ΔE 0.055
Use #81DDFB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.