#AEC5DA
Closest named color: Light Steel Blue (#B0C4DE). oklch(81.3% 0.039 245.9), rgb(174, 197, 218).
Aa
Black text reads best on this color (11.79:1).
About this color
#AEC5DA is a light, muted blue. In OKLCH its lightness is 81%, its chroma 0.039 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Steel Blue (#B0C4DE), ΔE 0.008 away. Black text reads best on it, at 11.79:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Light Steel Blue (#B0C4DE) |
| Black text | 11.79:1 |
| White text | 1.77:1 |
Values
| HEX | #AEC5DA |
| RGB | rgb(174, 197, 218) |
| HSL | hsl(209, 37%, 77%) |
| OKLCH | oklch(81.3% 0.039 245.9) |
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 #AEC5DA | 1.77:1 | Fails | Lc -36.8 | Non-text elements, placeholder text |
| Black text on #AEC5DA | 11.79:1 | AAA | Lc 71.0 | Content text, not long reading |
| #AEC5DA text on white | 1.77:1 | Fails | Lc 32.8 | Non-text elements, placeholder text |
| #AEC5DA text on black | 11.79:1 | AAA | Lc -69.8 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300 (this color)
#AEC5DA
oklch(81.3% 0.039 245.9)
-
Step 400
400
#81A5C6
oklch(70.7% 0.063 246.5)
-
Step 500
500
#608EB7
oklch(63% 0.08 246.4)
-
Step 600
600
#4678A3
oklch(55.6% 0.086 246.1)
-
Step 700
700
#37658C
oklch(49.2% 0.081 246)
-
Step 800
800
#2E5271
oklch(42.6% 0.067 246.2)
-
Step 900
900
#29445C
oklch(37.6% 0.053 246.6)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#AEC5DA 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) | #BDC5DB | 0.020 |
| Deuteranopia (no green cones) | #B7C0DA | 0.017 |
| Tritanopia (no blue cones) | #A2CACC | 0.032 |
| Achromatopsia (no color) | #C2C2C2 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC5DA
#AEC5DA
oklch(81.3% 0.039 245.9)
- #D4BDA8
#D4BDA8
oklch(81.2% 0.039 64.7)
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 #AEC5DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Steel Blue #B0C4DE ΔE 0.008
- Cloudy Blue #ACC2D9 ΔE 0.009
- Light Blue Grey #B7C9E2 ΔE 0.019
- Light Cornflower Blue #98C1D9 ΔE 0.030
- Light Grey Blue #9DBCD4 ΔE 0.034
- Silver #C0C0C0 ΔE 0.039
- Sky Blue #87CEEB ΔE 0.047
- Light Blue #ADD8E6 ΔE 0.049
Use #AEC5DA 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.