#AEC9EE
Closest named color: Light Blue Grey (#B7C9E2). oklch(82.8% 0.06 256.3), rgb(174, 201, 238).
Aa
Black text reads best on this color (12.38:1).
About this color
#AEC9EE is a light, muted blue. In OKLCH its lightness is 83%, its chroma 0.060 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue Grey (#B7C9E2), ΔE 0.020 away. Black text reads best on it, at 12.38:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Light Blue Grey (#B7C9E2) |
| Black text | 12.38:1 |
| White text | 1.69:1 |
Values
| HEX | #AEC9EE |
| RGB | rgb(174, 201, 238) |
| HSL | hsl(215, 65%, 81%) |
| OKLCH | oklch(82.8% 0.06 256.3) |
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 #AEC9EE | 1.69:1 | Fails | Lc -34.0 | Non-text elements, placeholder text |
| Black text on #AEC9EE | 12.38:1 | AAA | Lc 73.6 | Content text, not long reading |
| #AEC9EE text on white | 1.69:1 | Fails | Lc 30.2 | Non-text elements, placeholder text |
| #AEC9EE text on black | 12.38:1 | AAA | Lc -72.6 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300 (this color)
#AEC9EE
oklch(82.8% 0.06 256.3)
-
Step 400
400
#79A3DC
oklch(70.7% 0.096 256.2)
-
Step 500
500
#568BD2
oklch(63.1% 0.122 256.2)
-
Step 600
600
#3A73BF
oklch(55.5% 0.133 256.4)
-
Step 700
700
#2C60A5
oklch(49% 0.124 256.5)
-
Step 800
800
#264F86
oklch(42.7% 0.103 256.5)
-
Step 900
900
#23426B
oklch(37.7% 0.08 256.1)
-
Step 950
950
#15273F
oklch(27% 0.051 256.1)
#AEC9EE 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) | #BCCAF0 | 0.019 |
| Deuteranopia (no green cones) | #B5C4ED | 0.015 |
| Tritanopia (no blue cones) | #9CD1D5 | 0.053 |
| Achromatopsia (no color) | #C7C7C7 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC9EE
#AEC9EE
oklch(82.8% 0.06 256.3)
- #DDC29C
#DDC29C
oklch(82.8% 0.059 76.2)
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 #AEC9EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue Grey #B7C9E2 ΔE 0.020
- Light Steel Blue #B0C4DE ΔE 0.023
- Baby Blue #A2CFFE ΔE 0.025
- Cloudy Blue #ACC2D9 ΔE 0.031
- Light Periwinkle #C1C6FC ΔE 0.035
- Pastel Blue #A2BFFE ΔE 0.043
- Light Sky Blue #87CEFA ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.045
Use #AEC9EE 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.