#AAC3FB
Closest named color: Pastel Blue (#A2BFFE). oklch(81.8% 0.084 265.9), rgb(170, 195, 251).
Aa
Black text reads best on this color (11.90:1).
About this color
#AAC3FB is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.084 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 11.90:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.90:1 |
| White text | 1.76:1 |
Values
| HEX | #AAC3FB |
| RGB | rgb(170, 195, 251) |
| HSL | hsl(221, 91%, 83%) |
| OKLCH | oklch(81.8% 0.084 265.9) |
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 #AAC3FB | 1.76:1 | Fails | Lc -36.3 | Non-text elements, placeholder text |
| Black text on #AAC3FB | 11.90:1 | AAA | Lc 71.6 | Content text, not long reading |
| #AAC3FB text on white | 1.76:1 | Fails | Lc 32.3 | Non-text elements, placeholder text |
| #AAC3FB text on black | 11.90:1 | AAA | Lc -70.4 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300 (this color)
#AAC3FB
oklch(81.8% 0.084 265.9)
-
Step 400
400
#799DF4
oklch(70.7% 0.134 266)
-
Step 500
500
#5882F0
oklch(63.1% 0.171 266)
-
Step 600
600
#3F68DF
oklch(55.5% 0.187 266.1)
-
Step 700
700
#3156C1
oklch(49% 0.173 265.8)
-
Step 800
800
#29479C
oklch(42.7% 0.143 265.9)
-
Step 900
900
#253D7C
oklch(37.8% 0.111 265.7)
-
Step 950
950
#162449
oklch(27% 0.071 266.2)
#AAC3FB 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) | #B1C7FE | 0.015 |
| Deuteranopia (no green cones) | #A9C0FA | 0.008 |
| Tritanopia (no blue cones) | #93CED6 | 0.075 |
| Achromatopsia (no color) | #C3C3C3 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAC3FB
#AAC3FB
oklch(81.8% 0.084 265.9)
- #DCC084
#DCC084
oklch(81.8% 0.084 85.6)
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 #AAC3FB, 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 0.031
- Light Periwinkle #C1C6FC ΔE 0.032
- Light Steel Blue #B0C4DE ΔE 0.043
- Sky #82CAFC ΔE 0.045
- Light Sky Blue #87CEFA ΔE 0.046
- Light Blue Grey #B7C9E2 ΔE 0.046
- Cloudy Blue #ACC2D9 ΔE 0.048
Use #AAC3FB 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.