#AACEE4
Closest named color: Light Blue Grey (#B7C9E2). oklch(83.3% 0.049 235), rgb(170, 206, 228).
Aa
Black text reads best on this color (12.65:1).
About this color
#AACEE4 is a light, muted blue. In OKLCH its lightness is 83%, its chroma 0.049 and its hue 235°. 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 12.65:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Light Blue Grey (#B7C9E2) |
| Black text | 12.65:1 |
| White text | 1.65:1 |
Values
| HEX | #AACEE4 |
| RGB | rgb(170, 206, 228) |
| HSL | hsl(203, 52%, 78%) |
| OKLCH | oklch(83.3% 0.049 235) |
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 #AACEE4 | 1.65:1 | Fails | Lc -32.7 | Non-text elements, placeholder text |
| Black text on #AACEE4 | 12.65:1 | AAA | Lc 74.8 | Content text, not long reading |
| #AACEE4 text on white | 1.65:1 | Fails | Lc 29.0 | Dividers and decoration only |
| #AACEE4 text on black | 12.65:1 | AAA | Lc -73.8 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE9
oklch(88.6% 0.027 234)
-
Step 300
300 (this color)
#AACEE4
oklch(83.3% 0.049 235)
-
Step 400
400
#6EA9CB
oklch(70.7% 0.079 234.8)
-
Step 500
500
#4393BE
oklch(63.2% 0.101 235.1)
-
Step 600
600
#1B7CAA
oklch(55.5% 0.11 235.4)
-
Step 700
700
#086992
oklch(49.2% 0.102 234.9)
-
Step 800
800
#0F5676
oklch(42.8% 0.084 234.2)
-
Step 900
900
#17475F
oklch(37.7% 0.065 234.2)
-
Step 950
950
#0F2A38
oklch(27.1% 0.042 233.9)
#AACEE4 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) | #C4CDE5 | 0.033 |
| Deuteranopia (no green cones) | #BCC6E4 | 0.029 |
| Tritanopia (no blue cones) | #99D4D5 | 0.037 |
| Achromatopsia (no color) | #C9C9C9 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AACEE4
#AACEE4
oklch(83.3% 0.049 235)
- #E2C0AA
#E2C0AA
oklch(83.1% 0.049 54.8)
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 #AACEE4, 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 0.027
- Cloudy Blue #ACC2D9 ΔE 0.031
- Baby Blue #A2CFFE ΔE 0.037
- Celeste #A8DADC ΔE 0.038
- Sky Blue #87CEEB ΔE 0.039
- Light Cornflower Blue #98C1D9 ΔE 0.043
Use #AACEE4 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.