#AACEF3
Closest named color: Baby Blue (#A2CFFE). oklch(83.8% 0.065 249.3), rgb(170, 206, 243).
Aa
Black text reads best on this color (12.83:1).
About this color
#AACEF3 is a light, muted blue. In OKLCH its lightness is 84%, its chroma 0.065 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Baby Blue (#A2CFFE), ΔE 0.017 away. Black text reads best on it, at 12.83:1.
| Hue family | Blues |
| Lightness | light (84%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Baby Blue (#A2CFFE) |
| Black text | 12.83:1 |
| White text | 1.63:1 |
Values
| HEX | #AACEF3 |
| RGB | rgb(170, 206, 243) |
| HSL | hsl(210, 75%, 81%) |
| OKLCH | oklch(83.8% 0.065 249.3) |
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 #AACEF3 | 1.63:1 | Fails | Lc -31.9 | Non-text elements, placeholder text |
| Black text on #AACEF3 | 12.83:1 | AAA | Lc 75.5 | Fine for body text |
| #AACEF3 text on white | 1.63:1 | Fails | Lc 28.3 | Dividers and decoration only |
| #AACEF3 text on black | 12.83:1 | AAA | Lc -74.6 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF1
oklch(88.6% 0.036 249.5)
-
Step 300
300 (this color)
#AACEF3
oklch(83.8% 0.065 249.3)
-
Step 400
400
#6CA6DF
oklch(70.8% 0.104 249.1)
-
Step 500
500
#418ED6
oklch(63.2% 0.133 249.4)
-
Step 600
600
#1977C3
oklch(55.7% 0.143 249.1)
-
Step 700
700
#0663A8
oklch(49% 0.134 249.3)
-
Step 800
800
#0E5188
oklch(42.6% 0.111 249.4)
-
Step 900
900
#16446D
oklch(37.8% 0.086 249.1)
-
Step 950
950
#0F2840
oklch(27% 0.055 249.7)
#AACEF3 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) | #C0CEF5 | 0.028 |
| Deuteranopia (no green cones) | #B7C7F2 | 0.023 |
| Tritanopia (no blue cones) | #94D6DA | 0.054 |
| Achromatopsia (no color) | #CACACA | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AACEF3
#AACEF3
oklch(83.8% 0.065 249.3)
- #E6C39D
#E6C39D
oklch(83.8% 0.064 69.1)
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 #AACEF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Baby Blue #A2CFFE ΔE 0.017
- Light Blue Grey #B7C9E2 ΔE 0.026
- Light Steel Blue #B0C4DE ΔE 0.033
- Light Blue #ADD8E6 ΔE 0.038
- Light Sky Blue #87CEFA ΔE 0.038
- Light Periwinkle #C1C6FC ΔE 0.039
- Cloudy Blue #ACC2D9 ΔE 0.041
- Sky Blue #87CEEB ΔE 0.041
Use #AACEF3 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.