#81D5FF
Closest named color: Light Sky Blue (#87CEFA). oklch(83.5% 0.101 231.4), rgb(129, 213, 255).
Aa
Black text reads best on this color (12.89:1).
About this color
#81D5FF is a light, moderately saturated blue. In OKLCH its lightness is 83%, its chroma 0.101 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sky Blue (#87CEFA), ΔE 0.018 away. Black text reads best on it, at 12.89:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Light Sky Blue (#87CEFA) |
| Black text | 12.89:1 |
| White text | 1.62:1 |
Values
| HEX | #81D5FF |
| RGB | rgb(129, 213, 255) |
| HSL | hsl(200, 100%, 75%) |
| OKLCH | oklch(83.5% 0.101 231.4) |
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 #81D5FF | 1.62:1 | Fails | Lc -31.5 | Non-text elements, placeholder text |
| Black text on #81D5FF | 12.89:1 | AAA | Lc 75.9 | Fine for body text |
| #81D5FF text on white | 1.62:1 | Fails | Lc 27.9 | Dividers and decoration only |
| #81D5FF text on black | 12.89:1 | AAA | Lc -75.0 | 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 300.
-
Step 50
50
#EDF7FD
oklch(97% 0.013 233.7)
-
Step 100
100
#D7EEFA
oklch(93.6% 0.029 230.3)
-
Step 200
200
#B5E1F8
oklch(88.6% 0.056 230.9)
-
Step 300
300 (this color)
#81D5FF
oklch(83.5% 0.101 231.4)
-
Step 400
400
#00AFE9
oklch(70.7% 0.143 231.2)
-
Step 500
500
#0096C9
oklch(63.2% 0.128 231.5)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005776
oklch(42.8% 0.087 231.2)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#81D5FF 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) | #C0D2FF | 0.069 |
| Deuteranopia (no green cones) | #AEC5FE | 0.060 |
| Tritanopia (no blue cones) | #3CE1E3 | 0.075 |
| Achromatopsia (no color) | #CBCBCB | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81D5FF
#81D5FF
oklch(83.5% 0.101 231.4)
- #FEB68C
#FEB68C
oklch(83.4% 0.101 51.2)
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 #81D5FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sky Blue #87CEFA ΔE 0.018
- Sky #82CAFC ΔE 0.029
- Sky Blue #87CEEB ΔE 0.029
- Baby Blue #A2CFFE ΔE 0.035
- Lightblue #7BC8F6 ΔE 0.036
- Light Blue #ADD8E6 ΔE 0.058
- Vivid Sky Blue #4CC9F0 ΔE 0.059
- Pastel Blue #A2BFFE ΔE 0.064
Use #81D5FF 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.