#AACEE9
Closest named color: Light Blue Grey (#B7C9E2). oklch(83.4% 0.054 240.7), rgb(170, 206, 233).
Aa
Black text reads best on this color (12.71:1).
About this color
#AACEE9 is a light, muted blue. In OKLCH its lightness is 83%, its chroma 0.054 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue Grey (#B7C9E2), ΔE 0.019 away. Black text reads best on it, at 12.71:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Light Blue Grey (#B7C9E2) |
| Black text | 12.71:1 |
| White text | 1.65:1 |
Values
| HEX | #AACEE9 |
| RGB | rgb(170, 206, 233) |
| HSL | hsl(206, 59%, 79%) |
| OKLCH | oklch(83.4% 0.054 240.7) |
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 #AACEE9 | 1.65:1 | Fails | Lc -32.5 | Non-text elements, placeholder text |
| Black text on #AACEE9 | 12.71:1 | AAA | Lc 75.0 | Fine for body text |
| #AACEE9 text on white | 1.65:1 | Fails | Lc 28.8 | Dividers and decoration only |
| #AACEE9 text on black | 12.71:1 | AAA | Lc -74.1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCEB
oklch(88.4% 0.03 240.2)
-
Step 300
300 (this color)
#AACEE9
oklch(83.4% 0.054 240.7)
-
Step 400
400
#6EA8D2
oklch(70.8% 0.086 241)
-
Step 500
500
#4291C6
oklch(63% 0.111 241.1)
-
Step 600
600
#1A7BB2
oklch(55.7% 0.119 240.3)
-
Step 700
700
#076799
oklch(49.1% 0.111 240.6)
-
Step 800
800
#0E547C
oklch(42.6% 0.092 240.7)
-
Step 900
900
#174664
oklch(37.8% 0.072 240.7)
-
Step 950
950
#0F293B
oklch(27% 0.046 241.6)
#AACEE9 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) | #C3CDEA | 0.031 |
| Deuteranopia (no green cones) | #BAC6E9 | 0.028 |
| Tritanopia (no blue cones) | #97D5D7 | 0.043 |
| Achromatopsia (no color) | #C9C9C9 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AACEE9
#AACEE9
oklch(83.4% 0.054 240.7)
- #E4C1A6
#E4C1A6
oklch(83.4% 0.054 59.6)
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 #AACEE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue Grey #B7C9E2 ΔE 0.019
- Light Steel Blue #B0C4DE ΔE 0.026
- Light Blue #ADD8E6 ΔE 0.029
- Baby Blue #A2CFFE ΔE 0.030
- Cloudy Blue #ACC2D9 ΔE 0.033
- Sky Blue #87CEEB ΔE 0.038
- Celeste #A8DADC ΔE 0.042
- Light Sky Blue #87CEFA ΔE 0.043
Use #AACEE9 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.