#AAC4E4
Closest named color: Light Steel Blue (#B0C4DE). oklch(81.2% 0.053 253.8), rgb(170, 196, 228).
Aa
Black text reads best on this color (11.72:1).
About this color
#AAC4E4 is a light, muted blue. In OKLCH its lightness is 81%, its chroma 0.053 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Light Steel Blue (#B0C4DE), ΔE 0.011 away. Black text reads best on it, at 11.72:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Light Steel Blue (#B0C4DE) |
| Black text | 11.72:1 |
| White text | 1.79:1 |
Values
| HEX | #AAC4E4 |
| RGB | rgb(170, 196, 228) |
| HSL | hsl(213, 52%, 78%) |
| OKLCH | oklch(81.2% 0.053 253.8) |
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 #AAC4E4 | 1.79:1 | Fails | Lc -37.2 | Non-text elements, placeholder text |
| Black text on #AAC4E4 | 11.72:1 | AAA | Lc 70.7 | Content text, not long reading |
| #AAC4E4 text on white | 1.79:1 | Fails | Lc 33.1 | Non-text elements, placeholder text |
| #AAC4E4 text on black | 11.72:1 | AAA | Lc -69.5 | 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
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300 (this color)
#AAC4E4
oklch(81.2% 0.053 253.8)
-
Step 400
400
#7BA4D5
oklch(70.8% 0.085 253.3)
-
Step 500
500
#588CCA
oklch(63% 0.109 253.7)
-
Step 600
600
#3D75B7
oklch(55.6% 0.119 253.9)
-
Step 700
700
#2F629E
oklch(49.1% 0.111 254.1)
-
Step 800
800
#285080
oklch(42.7% 0.092 254.3)
-
Step 900
900
#254367
oklch(37.8% 0.072 254)
-
Step 950
950
#16273C
oklch(26.9% 0.046 254.4)
#AAC4E4 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) | #B9C5E6 | 0.020 |
| Deuteranopia (no green cones) | #B2BFE3 | 0.015 |
| Tritanopia (no blue cones) | #9ACBCE | 0.047 |
| Achromatopsia (no color) | #C1C1C1 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAC4E4
#AAC4E4
oklch(81.2% 0.053 253.8)
- #D7BD9C
#D7BD9C
oklch(81.2% 0.053 73.5)
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 #AAC4E4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Steel Blue #B0C4DE ΔE 0.011
- Cloudy Blue #ACC2D9 ΔE 0.015
- Light Blue Grey #B7C9E2 ΔE 0.023
- Light Cornflower Blue #98C1D9 ΔE 0.029
- Light Grey Blue #9DBCD4 ΔE 0.034
- Baby Blue #A2CFFE ΔE 0.040
- Sky Blue #87CEEB ΔE 0.043
- Pastel Blue #A2BFFE ΔE 0.044
Use #AAC4E4 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.