#A3ACBF
Closest named color: Cool Steel (#97A7B3). oklch(74.3% 0.029 265.4), rgb(163, 172, 191).
Aa
Black text reads best on this color (9.21:1).
About this color
#A3ACBF is a medium-light close to neutral grey. In OKLCH its lightness is 74%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Cool Steel (#97A7B3), ΔE 0.027 away. Black text reads best on it, at 9.21:1.
| Hue family | Neutrals |
| Lightness | medium-light (74%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.21:1 |
| White text | 2.27:1 |
Values
| HEX | #A3ACBF |
| RGB | rgb(163, 172, 191) |
| HSL | hsl(221, 18%, 69%) |
| OKLCH | oklch(74.3% 0.029 265.4) |
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 #A3ACBF | 2.27:1 | Fails | Lc -49.8 | Large or bold text, headings |
| Black text on #A3ACBF | 9.21:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #A3ACBF text on white | 2.27:1 | Fails | Lc 45.0 | Non-text elements, placeholder text |
| #A3ACBF text on black | 9.21:1 | AAA | Lc -57.1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D6D9E0
oklch(88.5% 0.01 267.4)
-
Step 300
300
#BBC1CD
oklch(81% 0.018 264.5)
-
Step 400
400 (this color)
#A3ACBF
oklch(74.3% 0.029 265.4)
-
Step 500
500
#7F8AA1
oklch(63.2% 0.037 265.1)
-
Step 600
600
#68738C
oklch(55.6% 0.041 266.4)
-
Step 700
700
#566177
oklch(49.2% 0.038 264.1)
-
Step 800
800
#474F61
oklch(42.8% 0.032 266.2)
-
Step 900
900
#3B424F
oklch(37.8% 0.024 262.8)
-
Step 950
950
#23262E
oklch(26.9% 0.016 269.1)
#A3ACBF 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) | #A6ADC0 | 0.005 |
| Deuteranopia (no green cones) | #A4ABBF | 0.003 |
| Tritanopia (no blue cones) | #9DB0B2 | 0.027 |
| Achromatopsia (no color) | #ACACAC | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3ACBF
#A3ACBF
oklch(74.3% 0.029 265.4)
- #B4AB97
#B4AB97
oklch(74.3% 0.03 86.7)
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 #A3ACBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.027
- French Gray #ADB5BD ΔE 0.030
- Dark Gray #A9A9A9 ΔE 0.030
- Light Grey Blue #9DBCD4 ΔE 0.044
- Cool Grey #95A3A6 ΔE 0.045
- Pewter #96A8A1 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.051
- Bluey Grey #89A0B0 ΔE 0.053
Use #A3ACBF 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.