#A3A8BB
Closest named color: Cool Steel (#97A7B3). oklch(73.4% 0.028 274), rgb(163, 168, 187).
Aa
Black text reads best on this color (8.87:1).
About this color
#A3A8BB is a medium-light close to neutral grey. In OKLCH its lightness is 73%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Cool Steel (#97A7B3), ΔE 0.021 away. Black text reads best on it, at 8.87:1.
| Hue family | Neutrals |
| Lightness | medium-light (73%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 8.87:1 |
| White text | 2.36:1 |
Values
| HEX | #A3A8BB |
| RGB | rgb(163, 168, 187) |
| HSL | hsl(227, 15%, 69%) |
| OKLCH | oklch(73.4% 0.028 274) |
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 #A3A8BB | 2.36:1 | Fails | Lc -51.6 | Large or bold text, headings |
| Black text on #A3A8BB | 8.87:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #A3A8BB text on white | 2.36:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #A3A8BB text on black | 8.87:1 | AAA | Lc -55.4 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAED
oklch(93.7% 0.004 271.4)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BDC0CC
oklch(80.9% 0.017 274.8)
-
Step 400
400 (this color)
#A3A8BB
oklch(73.4% 0.028 274)
-
Step 500
500
#8288A0
oklch(63% 0.037 274.2)
-
Step 600
600
#6C728B
oklch(55.6% 0.039 274.5)
-
Step 700
700
#5A6076
oklch(49.2% 0.036 273.1)
-
Step 800
800
#4A4E60
oklch(42.7% 0.03 275.2)
-
Step 900
900
#3D414E
oklch(37.7% 0.023 271.8)
-
Step 950
950
#24262E
oklch(27% 0.015 274.3)
#A3A8BB 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) | #A3A9BC | 0.003 |
| Deuteranopia (no green cones) | #A1A8BA | 0.003 |
| Tritanopia (no blue cones) | #9EABAE | 0.025 |
| Achromatopsia (no color) | #A8A8A8 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3A8BB
#A3A8BB
oklch(73.4% 0.028 274)
- #AEA995
#AEA995
oklch(73.3% 0.029 95.4)
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 #A3A8BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.021
- Dark Gray #A9A9A9 ΔE 0.028
- Cool Grey #95A3A6 ΔE 0.038
- French Gray #ADB5BD ΔE 0.039
- Pewter #96A8A1 ΔE 0.044
- Bluey Grey #89A0B0 ΔE 0.045
- Bluegrey #85A3B2 ΔE 0.045
- Cool Gray #8D99AE ΔE 0.054
Use #A3A8BB 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.