#AAC3DB
Closest named color: Cloudy Blue (#ACC2D9). oklch(80.6% 0.044 247.3), rgb(170, 195, 219).
Aa
Black text reads best on this color (11.53:1).
About this color
#AAC3DB is a light, muted blue. In OKLCH its lightness is 81%, its chroma 0.044 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.004 away. Black text reads best on it, at 11.53:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 11.53:1 |
| White text | 1.82:1 |
Values
| HEX | #AAC3DB |
| RGB | rgb(170, 195, 219) |
| HSL | hsl(209, 40%, 76%) |
| OKLCH | oklch(80.6% 0.044 247.3) |
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 #AAC3DB | 1.82:1 | Fails | Lc -38.1 | Non-text elements, placeholder text |
| Black text on #AAC3DB | 11.53:1 | AAA | Lc 69.9 | Content text, not long reading |
| #AAC3DB text on white | 1.82:1 | Fails | Lc 34.0 | Non-text elements, placeholder text |
| #AAC3DB text on black | 11.53:1 | AAA | Lc -68.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300 (this color)
#AAC3DB
oklch(80.6% 0.044 247.3)
-
Step 400
400
#7EA5CA
oklch(70.7% 0.069 247.5)
-
Step 500
500
#5C8EBD
oklch(63.1% 0.089 247.9)
-
Step 600
600
#4078A9
oklch(55.6% 0.097 247)
-
Step 700
700
#326591
oklch(49.2% 0.09 246.9)
-
Step 800
800
#2A5276
oklch(42.7% 0.075 247.7)
-
Step 900
900
#27445F
oklch(37.7% 0.058 248)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#AAC3DB 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) | #BAC3DC | 0.021 |
| Deuteranopia (no green cones) | #B4BEDB | 0.018 |
| Tritanopia (no blue cones) | #9DC9CB | 0.036 |
| Achromatopsia (no color) | #C0C0C0 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAC3DB
#AAC3DB
oklch(80.6% 0.044 247.3)
- #D3BBA2
#D3BBA2
oklch(80.6% 0.044 68.3)
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 #AAC3DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.004
- Light Steel Blue #B0C4DE ΔE 0.009
- Light Cornflower Blue #98C1D9 ΔE 0.023
- Light Blue Grey #B7C9E2 ΔE 0.025
- Light Grey Blue #9DBCD4 ΔE 0.027
- Silver #C0C0C0 ΔE 0.044
- Sky Blue #87CEEB ΔE 0.045
- French Gray #ADB5BD ΔE 0.047
Use #AAC3DB 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.