#AAC4FF
Closest named color: Pastel Blue (#A2BFFE). oklch(82.2% 0.088 266), rgb(170, 196, 255).
Aa
Black text reads best on this color (12.04:1).
About this color
#AAC4FF is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.088 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.017 away. Black text reads best on it, at 12.04:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 12.04:1 |
| White text | 1.74:1 |
Values
| HEX | #AAC4FF |
| RGB | rgb(170, 196, 255) |
| HSL | hsl(222, 100%, 83%) |
| OKLCH | oklch(82.2% 0.088 266) |
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 #AAC4FF | 1.74:1 | Fails | Lc -35.6 | Non-text elements, placeholder text |
| Black text on #AAC4FF | 12.04:1 | AAA | Lc 72.2 | Content text, not long reading |
| #AAC4FF text on white | 1.74:1 | Fails | Lc 31.7 | Non-text elements, placeholder text |
| #AAC4FF text on black | 12.04:1 | AAA | Lc -71.0 | Content text, not long reading |
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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300 (this color)
#AAC4FF
oklch(82.2% 0.088 266)
-
Step 400
400
#779DF8
oklch(70.8% 0.14 265.8)
-
Step 500
500
#5681F5
oklch(63.1% 0.18 266.1)
-
Step 600
600
#3D67E4
oklch(55.6% 0.196 266.1)
-
Step 700
700
#2F54C6
oklch(49% 0.183 266)
-
Step 800
800
#2846A0
oklch(42.7% 0.15 266.1)
-
Step 900
900
#243C7F
oklch(37.7% 0.117 266.1)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#AAC4FF 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) | #B1C8FF | 0.015 |
| Deuteranopia (no green cones) | #A9C1FE | 0.008 |
| Tritanopia (no blue cones) | #91D0D8 | 0.079 |
| Achromatopsia (no color) | #C4C4C4 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAC4FF
#AAC4FF
oklch(82.2% 0.088 266)
- #DEC181
#DEC181
oklch(82.1% 0.088 86.1)
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 #AAC4FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.017
- Baby Blue #A2CFFE ΔE 0.030
- Light Periwinkle #C1C6FC ΔE 0.031
- Sky #82CAFC ΔE 0.046
- Light Sky Blue #87CEFA ΔE 0.047
- Light Steel Blue #B0C4DE ΔE 0.048
- Light Blue Grey #B7C9E2 ΔE 0.050
- Carolina Blue #8AB8FE ΔE 0.053
Use #AAC4FF 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.