#AEC5FB
Closest named color: Pastel Blue (#A2BFFE). oklch(82.5% 0.08 266.7), rgb(174, 197, 251).
Aa
Black text reads best on this color (12.17:1).
About this color
#AEC5FB is a light, moderately saturated blue. In OKLCH its lightness is 83%, its chroma 0.080 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.024 away. Black text reads best on it, at 12.17:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 12.17:1 |
| White text | 1.72:1 |
Values
| HEX | #AEC5FB |
| RGB | rgb(174, 197, 251) |
| HSL | hsl(222, 91%, 83%) |
| OKLCH | oklch(82.5% 0.08 266.7) |
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 #AEC5FB | 1.72:1 | Fails | Lc -35.0 | Non-text elements, placeholder text |
| Black text on #AEC5FB | 12.17:1 | AAA | Lc 72.7 | Content text, not long reading |
| #AEC5FB text on white | 1.72:1 | Fails | Lc 31.1 | Non-text elements, placeholder text |
| #AEC5FB text on black | 12.17:1 | AAA | Lc -71.6 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300 (this color)
#AEC5FB
oklch(82.5% 0.08 266.7)
-
Step 400
400
#7C9DF1
oklch(70.7% 0.129 266.8)
-
Step 500
500
#5C82EC
oklch(63.1% 0.165 266.8)
-
Step 600
600
#4369DA
oklch(55.6% 0.178 266.6)
-
Step 700
700
#3657BD
oklch(49.2% 0.165 266.7)
-
Step 800
800
#2C4799
oklch(42.6% 0.138 266.7)
-
Step 900
900
#273D7A
oklch(37.7% 0.107 266.4)
-
Step 950
950
#172447
oklch(26.9% 0.068 266.6)
#AEC5FB 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) | #B4C9FD | 0.014 |
| Deuteranopia (no green cones) | #ADC2FA | 0.008 |
| Tritanopia (no blue cones) | #98D0D7 | 0.073 |
| Achromatopsia (no color) | #C5C5C5 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC5FB
#AEC5FB
oklch(82.5% 0.08 266.7)
- #DDC389
#DDC389
oklch(82.6% 0.081 86.5)
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 #AEC5FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.024
- Light Periwinkle #C1C6FC ΔE 0.025
- Baby Blue #A2CFFE ΔE 0.028
- Light Steel Blue #B0C4DE ΔE 0.041
- Light Blue Grey #B7C9E2 ΔE 0.042
- Light Sky Blue #87CEFA ΔE 0.047
- Cloudy Blue #ACC2D9 ΔE 0.048
- Sky #82CAFC ΔE 0.049
Use #AEC5FB 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.