#AEC5D1
Closest named color: Cloudy Blue (#ACC2D9). oklch(81% 0.03 230.4), rgb(174, 197, 209).
Aa
Black text reads best on this color (11.70:1).
About this color
#AEC5D1 is a light, muted blue. In OKLCH its lightness is 81%, its chroma 0.030 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.016 away. Black text reads best on it, at 11.70:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 11.70:1 |
| White text | 1.79:1 |
Values
| HEX | #AEC5D1 |
| RGB | rgb(174, 197, 209) |
| HSL | hsl(201, 28%, 75%) |
| OKLCH | oklch(81% 0.03 230.4) |
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 #AEC5D1 | 1.79:1 | Fails | Lc -37.3 | Non-text elements, placeholder text |
| Black text on #AEC5D1 | 11.70:1 | AAA | Lc 70.6 | Content text, not long reading |
| #AEC5D1 text on white | 1.79:1 | Fails | Lc 33.2 | Non-text elements, placeholder text |
| #AEC5D1 text on black | 11.70:1 | AAA | Lc -69.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300 (this color)
#AEC5D1
oklch(81% 0.03 230.4)
-
Step 400
400
#82A7B9
oklch(70.7% 0.048 229.2)
-
Step 500
500
#6291A8
oklch(63.2% 0.061 230.1)
-
Step 600
600
#477B93
oklch(55.6% 0.067 229.4)
-
Step 700
700
#38677E
oklch(49% 0.063 231.2)
-
Step 800
800
#2F5466
oklch(42.6% 0.052 230.8)
-
Step 900
900
#2A4653
oklch(37.8% 0.04 229.1)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#AEC5D1 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) | #BFC4D2 | 0.022 |
| Deuteranopia (no green cones) | #BAC0D1 | 0.020 |
| Tritanopia (no blue cones) | #A5C8C9 | 0.020 |
| Achromatopsia (no color) | #C1C1C1 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC5D1
#AEC5D1
oklch(81% 0.03 230.4)
- #D2BCB0
#D2BCB0
oklch(81% 0.03 50.5)
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 #AEC5D1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.016
- Light Steel Blue #B0C4DE ΔE 0.020
- Light Blue Grey #B7C9E2 ΔE 0.028
- Silver #C0C0C0 ΔE 0.030
- Light Cornflower Blue #98C1D9 ΔE 0.033
- Light Grey Blue #9DBCD4 ΔE 0.035
- French Gray #ADB5BD ΔE 0.044
- Light Blue #ADD8E6 ΔE 0.050
Use #AEC5D1 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.