#81ACEA
Closest named color: Carolina Blue (#8AB8FE). oklch(73.8% 0.102 257.5), rgb(129, 172, 234).
Aa
Black text reads best on this color (9.02:1).
About this color
#81ACEA is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.102 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.041 away. Black text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.02:1 |
| White text | 2.32:1 |
Values
| HEX | #81ACEA |
| RGB | rgb(129, 172, 234) |
| HSL | hsl(215, 71%, 71%) |
| OKLCH | oklch(73.8% 0.102 257.5) |
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 #81ACEA | 2.32:1 | Fails | Lc -50.7 | Large or bold text, headings |
| Black text on #81ACEA | 9.02:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #81ACEA text on white | 2.32:1 | Fails | Lc 45.8 | Large or bold text, headings |
| #81ACEA text on black | 9.02:1 | 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
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A7C3EA
oklch(81% 0.063 256.7)
-
Step 400
400 (this color)
#81ACEA
oklch(73.8% 0.102 257.5)
-
Step 500
500
#548AD7
oklch(63.1% 0.13 257.4)
-
Step 600
600
#3872C4
oklch(55.5% 0.141 257.5)
-
Step 700
700
#2B5FAA
oklch(49% 0.132 257.9)
-
Step 800
800
#244E89
oklch(42.6% 0.109 257.4)
-
Step 900
900
#22426E
oklch(37.8% 0.085 256.8)
-
Step 950
950
#152740
oklch(27.1% 0.053 256.9)
#81ACEA 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) | #95AFED | 0.027 |
| Deuteranopia (no green cones) | #88A5E9 | 0.019 |
| Tritanopia (no blue cones) | #58BAC1 | 0.091 |
| Achromatopsia (no color) | #AAAAAA | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81ACEA
#81ACEA
oklch(73.8% 0.102 257.5)
- #CEA25C
#CEA25C
oklch(73.8% 0.102 77.7)
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 #81ACEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.041
- Periwinkle Blue #8F99FB ΔE 0.062
- Pastel Blue #A2BFFE ΔE 0.070
- Light Grey Blue #9DBCD4 ΔE 0.071
- Lightblue #7BC8F6 ΔE 0.073
- Cornflower Blue #6495ED ΔE 0.075
- Light Cornflower Blue #98C1D9 ΔE 0.076
- Deep Sky Blue #00BFFF ΔE 0.078
Use #81ACEA 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.