#81ADEF
Closest named color: Carolina Blue (#8AB8FE). oklch(74.2% 0.107 258.3), rgb(129, 173, 239).
Aa
Black text reads best on this color (9.15:1).
About this color
#81ADEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.107 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.035 away. Black text reads best on it, at 9.15:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.15:1 |
| White text | 2.29:1 |
Values
| HEX | #81ADEF |
| RGB | rgb(129, 173, 239) |
| HSL | hsl(216, 77%, 72%) |
| OKLCH | oklch(74.2% 0.107 258.3) |
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 #81ADEF | 2.29:1 | Fails | Lc -50.0 | Large or bold text, headings |
| Black text on #81ADEF | 9.15:1 | AAA | Lc 58.8 | Large or bold text, headings |
| #81ADEF text on white | 2.29:1 | Fails | Lc 45.1 | Large or bold text, headings |
| #81ADEF text on black | 9.15:1 | AAA | Lc -57.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADAF2
oklch(88.4% 0.037 258.4)
-
Step 300
300
#A6C2EC
oklch(80.8% 0.067 258.4)
-
Step 400
400 (this color)
#81ADEF
oklch(74.2% 0.107 258.3)
-
Step 500
500
#5389DB
oklch(63.1% 0.137 258.5)
-
Step 600
600
#3671C9
oklch(55.5% 0.15 258.4)
-
Step 700
700
#295FAE
oklch(49.2% 0.139 258.2)
-
Step 800
800
#234E8D
oklch(42.8% 0.115 258.1)
-
Step 900
900
#214170
oklch(37.6% 0.089 258)
-
Step 950
950
#142642
oklch(26.9% 0.058 258.9)
#81ADEF 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) | #94B1F2 | 0.026 |
| Deuteranopia (no green cones) | #87A6EE | 0.019 |
| Tritanopia (no blue cones) | #54BBC4 | 0.095 |
| Achromatopsia (no color) | #ABABAB | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81ADEF
#81ADEF
oklch(74.2% 0.107 258.3)
- #D0A358
#D0A358
oklch(74.2% 0.107 78.7)
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 #81ADEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.035
- Periwinkle Blue #8F99FB ΔE 0.060
- Pastel Blue #A2BFFE ΔE 0.066
- Lightblue #7BC8F6 ΔE 0.071
- Light Grey Blue #9DBCD4 ΔE 0.074
- Cornflower Blue #6495ED ΔE 0.076
- Sky #82CAFC ΔE 0.076
- Deep Sky Blue #00BFFF ΔE 0.076
Use #81ADEF 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.