#ACB9EF
Closest named color: Pastel Blue (#A2BFFE). oklch(79.5% 0.078 274), rgb(172, 185, 239).
Aa
Black text reads best on this color (10.94:1).
About this color
#ACB9EF is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.078 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.024 away. Black text reads best on it, at 10.94:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.94:1 |
| White text | 1.91:1 |
Values
| HEX | #ACB9EF |
| RGB | rgb(172, 185, 239) |
| HSL | hsl(228, 68%, 81%) |
| OKLCH | oklch(79.5% 0.078 274) |
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 #ACB9EF | 1.91:1 | Fails | Lc -41.0 | Non-text elements, placeholder text |
| Black text on #ACB9EF | 10.94:1 | AAA | Lc 67.2 | Content text, not long reading |
| #ACB9EF text on white | 1.91:1 | Fails | Lc 36.7 | Non-text elements, placeholder text |
| #ACB9EF text on black | 10.94:1 | AAA | Lc -65.8 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300 (this color)
#ACB9EF
oklch(79.5% 0.078 274)
-
Step 400
400
#899AEE
oklch(70.8% 0.124 274.1)
-
Step 500
500
#6D7EE9
oklch(63.1% 0.161 274.1)
-
Step 600
600
#5765D7
oklch(55.7% 0.174 274.1)
-
Step 700
700
#4753BA
oklch(49.1% 0.161 273.9)
-
Step 800
800
#3A4497
oklch(42.6% 0.135 274)
-
Step 900
900
#313B78
oklch(37.8% 0.104 273.4)
-
Step 950
950
#1D2346
oklch(27.1% 0.065 273.9)
#ACB9EF 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) | #A9BEF1 | 0.013 |
| Deuteranopia (no green cones) | #A4B9EE | 0.011 |
| Tritanopia (no blue cones) | #9BC3CB | 0.070 |
| Achromatopsia (no color) | #BBBBBB | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ACB9EF
#ACB9EF
oklch(79.5% 0.078 274)
- #CCBC82
#CCBC82
oklch(79.5% 0.078 94.5)
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 #ACB9EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.024
- Light Steel Blue #B0C4DE ΔE 0.044
- Cloudy Blue #ACC2D9 ΔE 0.046
- Carolina Blue #8AB8FE ΔE 0.046
- Light Periwinkle #C1C6FC ΔE 0.047
- Light Grey Blue #9DBCD4 ΔE 0.048
- Light Cornflower Blue #98C1D9 ΔE 0.051
- Light Blue Grey #B7C9E2 ΔE 0.055
Use #ACB9EF 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.