#A3A6BB
Closest named color: Cool Steel (#97A7B3). oklch(73% 0.03 279.2), rgb(163, 166, 187).
Aa
Black text reads best on this color (8.72:1).
About this color
#A3A6BB is a medium-light, muted blue. In OKLCH its lightness is 73%, its chroma 0.030 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.022 away. Black text reads best on it, at 8.72:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #A3A6BB |
| RGB | rgb(163, 166, 187) |
| HSL | hsl(232, 15%, 69%) |
| OKLCH | oklch(73% 0.03 279.2) |
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 #A3A6BB | 2.40:1 | Fails | Lc -52.4 | Large or bold text, headings |
| Black text on #A3A6BB | 8.72:1 | AAA | Lc 56.6 | Large or bold text, headings |
| #A3A6BB text on white | 2.40:1 | Fails | Lc 47.4 | Large or bold text, headings |
| #A3A6BB text on black | 8.72:1 | AAA | Lc -54.6 | 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
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D7D8E0
oklch(88.4% 0.011 280.5)
-
Step 300
300
#BEC0CD
oklch(81% 0.018 279)
-
Step 400
400 (this color)
#A3A6BB
oklch(73% 0.03 279.2)
-
Step 500
500
#8487A1
oklch(63% 0.039 280)
-
Step 600
600
#6E718C
oklch(55.6% 0.042 280)
-
Step 700
700
#5C5F77
oklch(49.2% 0.038 279.3)
-
Step 800
800
#4B4D61
oklch(42.6% 0.033 280.4)
-
Step 900
900
#3E404F
oklch(37.6% 0.026 279.1)
-
Step 950
950
#25262E
oklch(27.1% 0.015 279.7)
#A3A6BB 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) | #A1A8BC | 0.006 |
| Deuteranopia (no green cones) | #A0A6BA | 0.005 |
| Tritanopia (no blue cones) | #9EAAAD | 0.028 |
| Achromatopsia (no color) | #A7A7A7 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3A6BB
#A3A6BB
oklch(73% 0.03 279.2)
- #ACA893
#ACA893
oklch(72.9% 0.03 98.2)
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 #A3A6BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.022
- Dark Gray #A9A9A9 ΔE 0.031
- Cool Grey #95A3A6 ΔE 0.037
- Bluey Grey #89A0B0 ΔE 0.043
- Bluegrey #85A3B2 ΔE 0.044
- French Gray #ADB5BD ΔE 0.044
- Pewter #96A8A1 ΔE 0.046
- Cool Gray #8D99AE ΔE 0.050
Use #A3A6BB 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.