#B1BDCF
Closest named color: Cloudy Blue (#ACC2D9). oklch(79.5% 0.029 258.4), rgb(177, 189, 207).
Aa
Black text reads best on this color (11.04:1).
About this color
#B1BDCF is a light close to neutral grey. In OKLCH its lightness is 79%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.016 away. Black text reads best on it, at 11.04:1.
| Hue family | Neutrals |
| Lightness | light (79%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 11.04:1 |
| White text | 1.90:1 |
Values
| HEX | #B1BDCF |
| RGB | rgb(177, 189, 207) |
| HSL | hsl(216, 24%, 75%) |
| OKLCH | oklch(79.5% 0.029 258.4) |
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 #B1BDCF | 1.90:1 | Fails | Lc -40.5 | Non-text elements, placeholder text |
| Black text on #B1BDCF | 11.04:1 | AAA | Lc 67.7 | Content text, not long reading |
| #B1BDCF text on white | 1.90:1 | Fails | Lc 36.2 | Non-text elements, placeholder text |
| #B1BDCF text on black | 11.04:1 | AAA | Lc -66.3 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE4
oklch(88.6% 0.016 257.2)
-
Step 300
300 (this color)
#B1BDCF
oklch(79.5% 0.029 258.4)
-
Step 400
400
#8FA2BE
oklch(70.7% 0.046 258)
-
Step 500
500
#748BAD
oklch(63.1% 0.058 258)
-
Step 600
600
#5C7499
oklch(55.5% 0.065 258.9)
-
Step 700
700
#4C6283
oklch(49.2% 0.06 258.3)
-
Step 800
800
#3E506A
oklch(42.7% 0.049 257.5)
-
Step 900
900
#354256
oklch(37.6% 0.038 258.9)
-
Step 950
950
#1F2732
oklch(27% 0.024 256.4)
#B1BDCF 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) | #B7BED0 | 0.009 |
| Deuteranopia (no green cones) | #B4BBCF | 0.006 |
| Tritanopia (no blue cones) | #AAC1C3 | 0.025 |
| Achromatopsia (no color) | #BCBCBC | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BDCF
#B1BDCF
oklch(79.5% 0.029 258.4)
- #C6BAA8
#C6BAA8
oklch(79.4% 0.028 78.1)
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 #B1BDCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.016
- Light Steel Blue #B0C4DE ΔE 0.024
- Light Grey Blue #9DBCD4 ΔE 0.026
- French Gray #ADB5BD ΔE 0.029
- Silver #C0C0C0 ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.032
- Light Blue Grey #B7C9E2 ΔE 0.037
- Thistle #D8BFD8 ΔE 0.057
Use #B1BDCF 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.