#B1B1BC
Closest named color: French Gray (#ADB5BD). oklch(76.4% 0.016 286), rgb(177, 177, 188).
Aa
Black text reads best on this color (9.88:1).
About this color
#B1B1BC is a medium-light close to neutral grey. In OKLCH its lightness is 76%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is French Gray (#ADB5BD), ΔE 0.011 away. Black text reads best on it, at 9.88:1.
| Hue family | Neutrals |
| Lightness | medium-light (76%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | French Gray (#ADB5BD) |
| Black text | 9.88:1 |
| White text | 2.12:1 |
Values
| HEX | #B1B1BC |
| RGB | rgb(177, 177, 188) |
| HSL | hsl(240, 8%, 72%) |
| OKLCH | oklch(76.4% 0.016 286) |
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 #B1B1BC | 2.12:1 | Fails | Lc -46.3 | Large or bold text, headings |
| Black text on #B1B1BC | 9.88:1 | AAA | Lc 62.3 | Content text, not long reading |
| #B1B1BC text on white | 2.12:1 | Fails | Lc 41.7 | Non-text elements, placeholder text |
| #B1B1BC text on black | 9.88:1 | AAA | Lc -60.6 | Content text, not long reading |
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 300.
-
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
#D8D8DF
oklch(88.4% 0.01 286.2)
-
Step 300
300 (this color)
#B1B1BC
oklch(76.4% 0.016 286)
-
Step 400
400
#9F9FB0
oklch(70.8% 0.025 285.8)
-
Step 500
500
#87879C
oklch(63.1% 0.031 285.5)
-
Step 600
600
#717187
oklch(55.7% 0.034 285.2)
-
Step 700
700
#5F5E73
oklch(49.1% 0.033 287.3)
-
Step 800
800
#4D4D5D
oklch(42.6% 0.026 285.2)
-
Step 900
900
#40404C
oklch(37.6% 0.02 285.4)
-
Step 950
950
#26262D
oklch(27.2% 0.013 285.5)
#B1B1BC 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) | #AFB2BD | 0.003 |
| Deuteranopia (no green cones) | #AEB2BC | 0.005 |
| Tritanopia (no blue cones) | #AFB3B4 | 0.015 |
| Achromatopsia (no color) | #B2B2B2 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1B1BC
#B1B1BC
oklch(76.4% 0.016 286)
- #B3B3A8
#B3B3A8
oklch(76.4% 0.015 106.8)
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 #B1B1BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Gray #ADB5BD ΔE 0.011
- Dark Gray #A9A9A9 ΔE 0.033
- Pinkish Grey #C8ACA9 ΔE 0.039
- Light Grey Blue #9DBCD4 ΔE 0.042
- Silver #C0C0C0 ΔE 0.047
- Cool Steel #97A7B3 ΔE 0.048
- Cloudy Blue #ACC2D9 ΔE 0.051
- Light Cornflower Blue #98C1D9 ΔE 0.054
Use #B1B1BC 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.