#AAC9FA
Closest named color: Baby Blue (#A2CFFE). oklch(83% 0.077 259.5), rgb(170, 201, 250).
Aa
Black text reads best on this color (12.44:1).
About this color
#AAC9FA is a light, moderately saturated blue. In OKLCH its lightness is 83%, its chroma 0.077 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Baby Blue (#A2CFFE), ΔE 0.017 away. Black text reads best on it, at 12.44:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Baby Blue (#A2CFFE) |
| Black text | 12.44:1 |
| White text | 1.68:1 |
Values
| HEX | #AAC9FA |
| RGB | rgb(170, 201, 250) |
| HSL | hsl(217, 89%, 82%) |
| OKLCH | oklch(83% 0.077 259.5) |
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 #AAC9FA | 1.68:1 | Fails | Lc -33.7 | Non-text elements, placeholder text |
| Black text on #AAC9FA | 12.44:1 | AAA | Lc 73.9 | Content text, not long reading |
| #AAC9FA text on white | 1.68:1 | Fails | Lc 30.0 | Dividers and decoration only |
| #AAC9FA text on black | 12.44:1 | AAA | Lc -72.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300 (this color)
#AAC9FA
oklch(83% 0.077 259.5)
-
Step 400
400
#72A1ED
oklch(70.7% 0.123 259.7)
-
Step 500
500
#4C87E7
oklch(63% 0.158 259.7)
-
Step 600
600
#2E6FD5
oklch(55.6% 0.171 259.3)
-
Step 700
700
#215CB9
oklch(49.1% 0.159 259.5)
-
Step 800
800
#1D4C96
oklch(42.8% 0.132 259.4)
-
Step 900
900
#1D4077
oklch(37.7% 0.102 259.2)
-
Step 950
950
#122646
oklch(27.1% 0.065 259.4)
#AAC9FA 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) | #B8CBFC | 0.019 |
| Deuteranopia (no green cones) | #B0C4F9 | 0.014 |
| Tritanopia (no blue cones) | #92D3D9 | 0.068 |
| Achromatopsia (no color) | #C7C7C7 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAC9FA
#AAC9FA
oklch(83% 0.077 259.5)
- #E2C28E
#E2C28E
oklch(82.9% 0.077 79.5)
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 #AAC9FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Baby Blue #A2CFFE ΔE 0.017
- Light Periwinkle #C1C6FC ΔE 0.030
- Pastel Blue #A2BFFE ΔE 0.031
- Light Blue Grey #B7C9E2 ΔE 0.037
- Light Steel Blue #B0C4DE ΔE 0.038
- Light Sky Blue #87CEFA ΔE 0.039
- Sky #82CAFC ΔE 0.043
- Cloudy Blue #ACC2D9 ΔE 0.045
Use #AAC9FA 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.