#AACEE5
Closest named color: Light Blue Grey (#B7C9E2). oklch(83.3% 0.05 236.2), rgb(170, 206, 229).
Aa
Black text reads best on this color (12.66:1).
About this color
#AACEE5 is a light, muted blue. In OKLCH its lightness is 83%, its chroma 0.050 and its hue 236°. 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 12.66:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Light Blue Grey (#B7C9E2) |
| Black text | 12.66:1 |
| White text | 1.65:1 |
Values
| HEX | #AACEE5 |
| RGB | rgb(170, 206, 229) |
| HSL | hsl(203, 53%, 78%) |
| OKLCH | oklch(83.3% 0.05 236.2) |
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 #AACEE5 | 1.65:1 | Fails | Lc -32.7 | Non-text elements, placeholder text |
| Black text on #AACEE5 | 12.66:1 | AAA | Lc 74.8 | Content text, not long reading |
| #AACEE5 text on white | 1.65:1 | Fails | Lc 29.0 | Dividers and decoration only |
| #AACEE5 text on black | 12.66:1 | AAA | Lc -73.9 | 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
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300 (this color)
#AACEE5
oklch(83.3% 0.05 236.2)
-
Step 400
400
#6EA9CC
oklch(70.8% 0.08 235.6)
-
Step 500
500
#4393BF
oklch(63.2% 0.102 235.7)
-
Step 600
600
#1B7CAB
oklch(55.6% 0.111 236)
-
Step 700
700
#086893
oklch(49% 0.104 236.4)
-
Step 800
800
#0F5577
oklch(42.6% 0.085 236.2)
-
Step 900
900
#174760
oklch(37.8% 0.066 235.3)
-
Step 950
950
#0F2938
oklch(26.8% 0.042 236.6)
#AACEE5 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) | #C4CDE6 | 0.033 |
| Deuteranopia (no green cones) | #BCC6E5 | 0.029 |
| Tritanopia (no blue cones) | #99D4D5 | 0.038 |
| Achromatopsia (no color) | #C9C9C9 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AACEE5
#AACEE5
oklch(83.3% 0.05 236.2)
- #E3C1A9
#E3C1A9
oklch(83.4% 0.051 57.2)
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 #AACEE5, 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 0.035
- Sky Blue #87CEEB ΔE 0.038
- Celeste #A8DADC ΔE 0.039
- Light Cornflower Blue #98C1D9 ΔE 0.044
Use #AACEE5 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.