#A3A3BB
Closest named color: Cool Steel (#97A7B3). oklch(72.3% 0.035 285.5), rgb(163, 163, 187).
Aa
Black text reads best on this color (8.51:1).
About this color
#A3A3BB is a medium-light, muted purple. In OKLCH its lightness is 72%, its chroma 0.035 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.025 away. Black text reads best on it, at 8.51:1.
| Hue family | Purples |
| Lightness | medium-light (72%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.51:1 |
| White text | 2.46:1 |
Values
| HEX | #A3A3BB |
| RGB | rgb(163, 163, 187) |
| HSL | hsl(240, 15%, 69%) |
| OKLCH | oklch(72.3% 0.035 285.5) |
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 #A3A3BB | 2.46:1 | Fails | Lc -53.5 | Large or bold text, headings |
| Black text on #A3A3BB | 8.51:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #A3A3BB text on white | 2.46:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #A3A3BB text on black | 8.51:1 | AAA | Lc -53.5 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E1
oklch(88.5% 0.012 286.1)
-
Step 300
300
#BFBFCE
oklch(80.9% 0.021 285.9)
-
Step 400
400 (this color)
#A3A3BB
oklch(72.3% 0.035 285.5)
-
Step 500
500
#8686A4
oklch(63.1% 0.045 285)
-
Step 600
600
#70708F
oklch(55.7% 0.048 284.7)
-
Step 700
700
#5E5D79
oklch(49% 0.045 286.3)
-
Step 800
800
#4D4C63
oklch(42.7% 0.038 286.7)
-
Step 900
900
#404051
oklch(37.8% 0.029 284.9)
-
Step 950
950
#25252F
oklch(26.9% 0.018 285.1)
#A3A3BB 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) | #9DA6BC | 0.011 |
| Deuteranopia (no green cones) | #9DA4BA | 0.009 |
| Tritanopia (no blue cones) | #9EA7AB | 0.030 |
| Achromatopsia (no color) | #A5A5A5 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3A3BB
#A3A3BB
oklch(72.3% 0.035 285.5)
- #A8A78F
#A8A78F
oklch(72.3% 0.034 105.3)
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 #A3A3BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.025
- Dark Gray #A9A9A9 ΔE 0.036
- Cool Grey #95A3A6 ΔE 0.038
- Bluey Grey #89A0B0 ΔE 0.041
- Bluegrey #85A3B2 ΔE 0.043
- Cool Gray #8D99AE ΔE 0.045
- Pewter #96A8A1 ΔE 0.049
- French Gray #ADB5BD ΔE 0.052
Use #A3A3BB 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.