#A3AEC9
Closest named color: French Gray (#ADB5BD). oklch(75.1% 0.041 267.8), rgb(163, 174, 201).
Aa
Black text reads best on this color (9.45:1).
About this color
#A3AEC9 is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.041 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Gray (#ADB5BD), ΔE 0.033 away. Black text reads best on it, at 9.45:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | French Gray (#ADB5BD) |
| Black text | 9.45:1 |
| White text | 2.22:1 |
Values
| HEX | #A3AEC9 |
| RGB | rgb(163, 174, 201) |
| HSL | hsl(223, 26%, 71%) |
| OKLCH | oklch(75.1% 0.041 267.8) |
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 #A3AEC9 | 2.22:1 | Fails | Lc -48.5 | Large or bold text, headings |
| Black text on #A3AEC9 | 9.45:1 | AAA | Lc 60.2 | Content text, not long reading |
| #A3AEC9 text on white | 2.22:1 | Fails | Lc 43.8 | Non-text elements, placeholder text |
| #A3AEC9 text on black | 9.45:1 | AAA | Lc -58.4 | Large or bold text, headings |
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 400.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#B9C0D2
oklch(80.8% 0.026 268.8)
-
Step 400
400 (this color)
#A3AEC9
oklch(75.1% 0.041 267.8)
-
Step 500
500
#7C89AA
oklch(63.2% 0.052 268.1)
-
Step 600
600
#657295
oklch(55.5% 0.057 268.7)
-
Step 700
700
#54607F
oklch(49.1% 0.052 268.1)
-
Step 800
800
#454E67
oklch(42.6% 0.043 269.2)
-
Step 900
900
#3A4154
oklch(37.7% 0.034 269)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#A3AEC9 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) | #A6B0CA | 0.007 |
| Deuteranopia (no green cones) | #A3ACC8 | 0.005 |
| Tritanopia (no blue cones) | #9AB3B7 | 0.036 |
| Achromatopsia (no color) | #AEAEAE | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3AEC9
#A3AEC9
oklch(75.1% 0.041 267.8)
- #B9AD91
#B9AD91
oklch(75% 0.041 87.6)
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 #A3AEC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Gray #ADB5BD ΔE 0.033
- Light Grey Blue #9DBCD4 ΔE 0.036
- Cool Steel #97A7B3 ΔE 0.038
- Dark Gray #A9A9A9 ΔE 0.044
- Light Cornflower Blue #98C1D9 ΔE 0.050
- Cloudy Blue #ACC2D9 ΔE 0.055
- Cool Grey #95A3A6 ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.059
Use #A3AEC9 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.