#81ACFF
Closest named color: Carolina Blue (#8AB8FE). oklch(74.8% 0.129 262.8), rgb(129, 172, 255).
Aa
Black text reads best on this color (9.27:1).
About this color
#81ACFF is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.129 and its hue 263°. 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 9.27:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 9.27:1 |
| White text | 2.26:1 |
Values
| HEX | #81ACFF |
| RGB | rgb(129, 172, 255) |
| HSL | hsl(220, 100%, 75%) |
| OKLCH | oklch(74.8% 0.129 262.8) |
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 #81ACFF | 2.26:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #81ACFF | 9.27:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #81ACFF text on white | 2.26:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #81ACFF text on black | 9.27:1 | AAA | Lc -57.6 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF8
oklch(88.6% 0.045 263.1)
-
Step 300
300
#A5C1F6
oklch(80.9% 0.081 263)
-
Step 400
400 (this color)
#81ACFF
oklch(74.8% 0.129 262.8)
-
Step 500
500
#5185EC
oklch(63.1% 0.165 262.5)
-
Step 600
600
#366CDB
oklch(55.7% 0.18 262.6)
-
Step 700
700
#2959BE
oklch(49.1% 0.168 262.7)
-
Step 800
800
#234999
oklch(42.6% 0.138 262.8)
-
Step 900
900
#213E7A
oklch(37.6% 0.108 262.9)
-
Step 950
950
#142547
oklch(27% 0.067 262.7)
#81ACFF 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) | #8CB3FF | 0.024 |
| Deuteranopia (no green cones) | #7EA7FD | 0.014 |
| Tritanopia (no blue cones) | #48BECA | 0.116 |
| Achromatopsia (no color) | #ACACAC | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81ACFF
#81ACFF
oklch(74.8% 0.129 262.8)
- #D5A53F
#D5A53F
oklch(74.8% 0.129 82.9)
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 #81ACFF, 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 0.049
- Pastel Blue #A2BFFE ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.074
- Lightblue #7BC8F6 ΔE 0.080
- Deep Sky Blue #00BFFF ΔE 0.080
- Perrywinkle #8F8CE7 ΔE 0.082
- Sky #82CAFC ΔE 0.082
Use #81ACFF 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.