#B1BBD3
Closest named color: Cloudy Blue (#ACC2D9). oklch(79.2% 0.036 267.6), rgb(177, 187, 211).
Aa
Black text reads best on this color (10.91:1).
About this color
#B1BBD3 is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.036 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.018 away. Black text reads best on it, at 10.91:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 10.91:1 |
| White text | 1.92:1 |
Values
| HEX | #B1BBD3 |
| RGB | rgb(177, 187, 211) |
| HSL | hsl(222, 28%, 76%) |
| OKLCH | oklch(79.2% 0.036 267.6) |
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 #B1BBD3 | 1.92:1 | Fails | Lc -41.1 | Non-text elements, placeholder text |
| Black text on #B1BBD3 | 10.91:1 | AAA | Lc 67.1 | Content text, not long reading |
| #B1BBD3 text on white | 1.92:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #B1BBD3 text on black | 10.91:1 | AAA | Lc -65.7 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E7
oklch(88.5% 0.02 267.3)
-
Step 300
300 (this color)
#B1BBD3
oklch(79.2% 0.036 267.6)
-
Step 400
400
#91A0C5
oklch(70.7% 0.057 267.7)
-
Step 500
500
#7688B7
oklch(63.1% 0.074 268.1)
-
Step 600
600
#5F72A2
oklch(55.7% 0.078 267.3)
-
Step 700
700
#4E5F8B
oklch(49.1% 0.074 267.5)
-
Step 800
800
#404E71
oklch(42.7% 0.061 267.1)
-
Step 900
900
#36415B
oklch(37.7% 0.047 266.5)
-
Step 950
950
#202635
oklch(27% 0.029 267.5)
#B1BBD3 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) | #B4BCD4 | 0.005 |
| Deuteranopia (no green cones) | #B1BAD2 | 0.003 |
| Tritanopia (no blue cones) | #A9C0C3 | 0.033 |
| Achromatopsia (no color) | #BBBBBB | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BBD3
#B1BBD3
oklch(79.2% 0.036 267.6)
- #C5BAA2
#C5BAA2
oklch(79.2% 0.035 86.3)
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 #B1BBD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.018
- Light Steel Blue #B0C4DE ΔE 0.024
- Light Grey Blue #9DBCD4 ΔE 0.025
- French Gray #ADB5BD ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.032
- Silver #C0C0C0 ΔE 0.039
- Light Blue Grey #B7C9E2 ΔE 0.039
- Thistle #D8BFD8 ΔE 0.057
Use #B1BBD3 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.