#A3AEC3
Closest named color: French Gray (#ADB5BD). oklch(74.9% 0.033 263.5), rgb(163, 174, 195).
Aa
Black text reads best on this color (9.39:1).
About this color
#A3AEC3 is a medium-light, muted blue. In OKLCH its lightness is 75%, its chroma 0.033 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is French Gray (#ADB5BD), ΔE 0.028 away. Black text reads best on it, at 9.39:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | French Gray (#ADB5BD) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #A3AEC3 |
| RGB | rgb(163, 174, 195) |
| HSL | hsl(219, 21%, 70%) |
| OKLCH | oklch(74.9% 0.033 263.5) |
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 #A3AEC3 | 2.23:1 | Fails | Lc -48.8 | Large or bold text, headings |
| Black text on #A3AEC3 | 9.39:1 | AAA | Lc 59.9 | Large or bold text, headings |
| #A3AEC3 text on white | 2.23:1 | Fails | Lc 44.0 | Non-text elements, placeholder text |
| #A3AEC3 text on black | 9.39:1 | AAA | Lc -58.1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CE
oklch(80.9% 0.02 263)
-
Step 400
400 (this color)
#A3AEC3
oklch(74.9% 0.033 263.5)
-
Step 500
500
#7C8AA3
oklch(63.1% 0.041 262)
-
Step 600
600
#66748F
oklch(55.8% 0.045 263.4)
-
Step 700
700
#546179
oklch(49.1% 0.042 262.6)
-
Step 800
800
#454F63
oklch(42.7% 0.036 264.1)
-
Step 900
900
#3A4250
oklch(37.7% 0.026 261.6)
-
Step 950
950
#22272F
oklch(27.1% 0.017 259.8)
#A3AEC3 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) | #A8AFC4 | 0.008 |
| Deuteranopia (no green cones) | #A5ACC2 | 0.006 |
| Tritanopia (no blue cones) | #9BB2B5 | 0.029 |
| Achromatopsia (no color) | #ADADAD | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3AEC3
#A3AEC3
oklch(74.9% 0.033 263.5)
- #B8AC97
#B8AC97
oklch(74.9% 0.032 81.7)
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 #A3AEC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Gray #ADB5BD ΔE 0.028
- Cool Steel #97A7B3 ΔE 0.032
- Dark Gray #A9A9A9 ΔE 0.036
- Light Grey Blue #9DBCD4 ΔE 0.038
- Cool Grey #95A3A6 ΔE 0.051
- Light Cornflower Blue #98C1D9 ΔE 0.051
- Pewter #96A8A1 ΔE 0.053
- Bluegrey #85A3B2 ΔE 0.056
Use #A3AEC3 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.