#B1BBCB
Closest named color: Cloudy Blue (#ACC2D9). oklch(78.9% 0.025 259.8), rgb(177, 187, 203).
Aa
Black text reads best on this color (10.83:1).
About this color
#B1BBCB is a light close to neutral grey. In OKLCH its lightness is 79%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.023 away. Black text reads best on it, at 10.83:1.
| Hue family | Neutrals |
| Lightness | light (79%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 10.83:1 |
| White text | 1.93:1 |
Values
| HEX | #B1BBCB |
| RGB | rgb(177, 187, 203) |
| HSL | hsl(217, 20%, 75%) |
| OKLCH | oklch(78.9% 0.025 259.8) |
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 #B1BBCB | 1.93:1 | Fails | Lc -41.5 | Non-text elements, placeholder text |
| Black text on #B1BBCB | 10.83:1 | AAA | Lc 66.7 | Content text, not long reading |
| #B1BBCB text on white | 1.93:1 | Fails | Lc 37.2 | Non-text elements, placeholder text |
| #B1BBCB text on black | 10.83:1 | AAA | Lc -65.3 | 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300 (this color)
#B1BBCB
oklch(78.9% 0.025 259.8)
-
Step 400
400
#92A2BA
oklch(70.8% 0.04 258.4)
-
Step 500
500
#778AA9
oklch(63% 0.052 260.1)
-
Step 600
600
#607495
oklch(55.6% 0.057 260.3)
-
Step 700
700
#4F617F
oklch(49% 0.053 260.5)
-
Step 800
800
#415067
oklch(42.8% 0.043 258.8)
-
Step 900
900
#374254
oklch(37.7% 0.034 260.2)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#B1BBCB 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) | #B6BCCC | 0.008 |
| Deuteranopia (no green cones) | #B3B9CB | 0.006 |
| Tritanopia (no blue cones) | #ABBEC0 | 0.022 |
| Achromatopsia (no color) | #BABABA | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BBCB
#B1BBCB
oklch(78.9% 0.025 259.8)
- #C3B9A9
#C3B9A9
oklch(79% 0.025 79.7)
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 #B1BBCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.023
- French Gray #ADB5BD ΔE 0.023
- Light Grey Blue #9DBCD4 ΔE 0.027
- Light Steel Blue #B0C4DE ΔE 0.030
- Silver #C0C0C0 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.034
- Light Blue Grey #B7C9E2 ΔE 0.044
- Pinkish Grey #C8ACA9 ΔE 0.056
Use #B1BBCB 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.