#AACEF5
Closest named color: Baby Blue (#A2CFFE). oklch(83.9% 0.067 250.7), rgb(170, 206, 245).
Aa
Black text reads best on this color (12.85:1).
About this color
#AACEF5 is a light, muted blue. In OKLCH its lightness is 84%, its chroma 0.067 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Baby Blue (#A2CFFE), ΔE 0.014 away. Black text reads best on it, at 12.85:1.
| Hue family | Blues |
| Lightness | light (84%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Baby Blue (#A2CFFE) |
| Black text | 12.85:1 |
| White text | 1.63:1 |
Values
| HEX | #AACEF5 |
| RGB | rgb(170, 206, 245) |
| HSL | hsl(211, 79%, 81%) |
| OKLCH | oklch(83.9% 0.067 250.7) |
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 #AACEF5 | 1.63:1 | Fails | Lc -31.8 | Non-text elements, placeholder text |
| Black text on #AACEF5 | 12.85:1 | AAA | Lc 75.6 | Fine for body text |
| #AACEF5 text on white | 1.63:1 | Fails | Lc 28.2 | Dividers and decoration only |
| #AACEF5 text on black | 12.85:1 | AAA | Lc -74.7 | 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
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300 (this color)
#AACEF5
oklch(83.9% 0.067 250.7)
-
Step 400
400
#6CA5E1
oklch(70.7% 0.107 250.7)
-
Step 500
500
#418DD9
oklch(63.1% 0.137 250.9)
-
Step 600
600
#1976C6
oklch(55.7% 0.148 250.4)
-
Step 700
700
#0762AB
oklch(49% 0.138 250.8)
-
Step 800
800
#0E518B
oklch(42.8% 0.114 250.6)
-
Step 900
900
#16436F
oklch(37.6% 0.09 251.1)
-
Step 950
950
#0E2841
oklch(27.1% 0.057 249.9)
#AACEF5 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) | #BFCFF7 | 0.027 |
| Deuteranopia (no green cones) | #B7C7F4 | 0.023 |
| Tritanopia (no blue cones) | #94D7DB | 0.057 |
| Achromatopsia (no color) | #CACACA | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AACEF5
#AACEF5
oklch(83.9% 0.067 250.7)
- #E7C39B
#E7C39B
oklch(83.9% 0.067 69.7)
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 #AACEF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Baby Blue #A2CFFE ΔE 0.014
- Light Blue Grey #B7C9E2 ΔE 0.029
- Light Steel Blue #B0C4DE ΔE 0.035
- Light Periwinkle #C1C6FC ΔE 0.038
- Light Sky Blue #87CEFA ΔE 0.038
- Light Blue #ADD8E6 ΔE 0.040
- Sky Blue #87CEEB ΔE 0.043
- Cloudy Blue #ACC2D9 ΔE 0.043
Use #AACEF5 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.