#AEC5E5
Closest named color: Light Steel Blue (#B0C4DE). oklch(81.7% 0.052 256.7), rgb(174, 197, 229).
Aa
Black text reads best on this color (11.91:1).
About this color
#AEC5E5 is a light, muted blue. In OKLCH its lightness is 82%, its chroma 0.052 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Light Steel Blue (#B0C4DE), ΔE 0.010 away. Black text reads best on it, at 11.91:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Light Steel Blue (#B0C4DE) |
| Black text | 11.91:1 |
| White text | 1.76:1 |
Values
| HEX | #AEC5E5 |
| RGB | rgb(174, 197, 229) |
| HSL | hsl(215, 51%, 79%) |
| OKLCH | oklch(81.7% 0.052 256.7) |
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 #AEC5E5 | 1.76:1 | Fails | Lc -36.2 | Non-text elements, placeholder text |
| Black text on #AEC5E5 | 11.91:1 | AAA | Lc 71.6 | Content text, not long reading |
| #AEC5E5 text on white | 1.76:1 | Fails | Lc 32.3 | Non-text elements, placeholder text |
| #AEC5E5 text on black | 11.91:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300 (this color)
#AEC5E5
oklch(81.7% 0.052 256.7)
-
Step 400
400
#7FA3D4
oklch(70.7% 0.082 256.2)
-
Step 500
500
#5E8BC9
oklch(63.1% 0.106 256.6)
-
Step 600
600
#4474B6
oklch(55.6% 0.116 256.7)
-
Step 700
700
#36619C
oklch(49.1% 0.107 256.7)
-
Step 800
800
#2D4F7F
oklch(42.6% 0.09 257.2)
-
Step 900
900
#284266
oklch(37.6% 0.07 256.8)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#AEC5E5 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) | #BAC6E7 | 0.016 |
| Deuteranopia (no green cones) | #B4C1E4 | 0.012 |
| Tritanopia (no blue cones) | #9FCCCF | 0.046 |
| Achromatopsia (no color) | #C3C3C3 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC5E5
#AEC5E5
oklch(81.7% 0.052 256.7)
- #D7BF9E
#D7BF9E
oklch(81.7% 0.052 75.7)
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 #AEC5E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Steel Blue #B0C4DE ΔE 0.010
- Cloudy Blue #ACC2D9 ΔE 0.017
- Light Blue Grey #B7C9E2 ΔE 0.018
- Light Cornflower Blue #98C1D9 ΔE 0.035
- Baby Blue #A2CFFE ΔE 0.038
- Light Grey Blue #9DBCD4 ΔE 0.039
- Light Periwinkle #C1C6FC ΔE 0.043
- Pastel Blue #A2BFFE ΔE 0.046
Use #AEC5E5 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.