#AEC3DD
Closest named color: Light Steel Blue (#B0C4DE). oklch(81% 0.043 253.8), rgb(174, 195, 221).
Aa
Black text reads best on this color (11.64:1).
About this color
#AEC3DD is a light, muted blue. In OKLCH its lightness is 81%, its chroma 0.043 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Light Steel Blue (#B0C4DE), ΔE 0.004 away. Black text reads best on it, at 11.64:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Light Steel Blue (#B0C4DE) |
| Black text | 11.64:1 |
| White text | 1.80:1 |
Values
| HEX | #AEC3DD |
| RGB | rgb(174, 195, 221) |
| HSL | hsl(213, 41%, 77%) |
| OKLCH | oklch(81% 0.043 253.8) |
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 #AEC3DD | 1.80:1 | Fails | Lc -37.5 | Non-text elements, placeholder text |
| Black text on #AEC3DD | 11.64:1 | AAA | Lc 70.4 | Content text, not long reading |
| #AEC3DD text on white | 1.80:1 | Fails | Lc 33.5 | Non-text elements, placeholder text |
| #AEC3DD text on black | 11.64:1 | AAA | Lc -69.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CEDAE9
oklch(88.4% 0.024 254)
-
Step 300
300 (this color)
#AEC3DD
oklch(81% 0.043 253.8)
-
Step 400
400
#83A3CC
oklch(70.7% 0.07 254.8)
-
Step 500
500
#638CBE
oklch(63% 0.089 253.9)
-
Step 600
600
#4976AB
oklch(55.7% 0.097 253.4)
-
Step 700
700
#3B6392
oklch(49.2% 0.088 253.5)
-
Step 800
800
#315177
oklch(42.8% 0.074 253.6)
-
Step 900
900
#2B4360
oklch(37.7% 0.058 253.8)
-
Step 950
950
#1A2738
oklch(26.9% 0.037 255.4)
#AEC3DD 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) | #BAC4DE | 0.016 |
| Deuteranopia (no green cones) | #B5BFDC | 0.013 |
| Tritanopia (no blue cones) | #A2C9CB | 0.038 |
| Achromatopsia (no color) | #C1C1C1 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC3DD
#AEC3DD
oklch(81% 0.043 253.8)
- #D2BDA3
#D2BDA3
oklch(80.9% 0.043 73.1)
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 #AEC3DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Steel Blue #B0C4DE ΔE 0.004
- Cloudy Blue #ACC2D9 ΔE 0.006
- Light Blue Grey #B7C9E2 ΔE 0.021
- Light Cornflower Blue #98C1D9 ΔE 0.029
- Light Grey Blue #9DBCD4 ΔE 0.031
- Silver #C0C0C0 ΔE 0.043
- Baby Blue #A2CFFE ΔE 0.048
- Sky Blue #87CEEB ΔE 0.048
Use #AEC3DD 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.