#81ACEB
Closest named color: Carolina Blue (#8AB8FE). oklch(73.8% 0.103 257.8), rgb(129, 172, 235).
Aa
Black text reads best on this color (9.03:1).
About this color
#81ACEB is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.103 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.040 away. Black text reads best on it, at 9.03:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.03:1 |
| White text | 2.32:1 |
Values
| HEX | #81ACEB |
| RGB | rgb(129, 172, 235) |
| HSL | hsl(216, 73%, 71%) |
| OKLCH | oklch(73.8% 0.103 257.8) |
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 #81ACEB | 2.32:1 | Fails | Lc -50.7 | Large or bold text, headings |
| Black text on #81ACEB | 9.03:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #81ACEB text on white | 2.32:1 | Fails | Lc 45.8 | Large or bold text, headings |
| #81ACEB text on black | 9.03:1 | AAA | Lc -56.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A7C3EB
oklch(81% 0.064 257.3)
-
Step 400
400 (this color)
#81ACEB
oklch(73.8% 0.103 257.8)
-
Step 500
500
#548AD8
oklch(63.2% 0.132 257.6)
-
Step 600
600
#3872C5
oklch(55.6% 0.143 257.7)
-
Step 700
700
#2A5FAB
oklch(49.1% 0.134 257.9)
-
Step 800
800
#244E8A
oklch(42.7% 0.11 257.7)
-
Step 900
900
#22416E
oklch(37.6% 0.086 257.8)
-
Step 950
950
#152741
oklch(27.2% 0.054 257.6)
#81ACEB 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) | #94B0EE | 0.026 |
| Deuteranopia (no green cones) | #88A5EA | 0.019 |
| Tritanopia (no blue cones) | #57BAC2 | 0.092 |
| Achromatopsia (no color) | #AAAAAA | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81ACEB
#81ACEB
oklch(73.8% 0.103 257.8)
- #CEA25B
#CEA25B
oklch(73.8% 0.103 78)
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 #81ACEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.040
- Periwinkle Blue #8F99FB ΔE 0.061
- Pastel Blue #A2BFFE ΔE 0.070
- Light Grey Blue #9DBCD4 ΔE 0.072
- Lightblue #7BC8F6 ΔE 0.073
- Cornflower Blue #6495ED ΔE 0.074
- Light Cornflower Blue #98C1D9 ΔE 0.077
- Deep Sky Blue #00BFFF ΔE 0.078
Use #81ACEB 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.