#B1BBD8
Closest named color: Cloudy Blue (#ACC2D9). oklch(79.4% 0.043 270.4), rgb(177, 187, 216).
Aa
Black text reads best on this color (10.96:1).
About this color
#B1BBD8 is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.043 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.019 away. Black text reads best on it, at 10.96:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 10.96:1 |
| White text | 1.91:1 |
Values
| HEX | #B1BBD8 |
| RGB | rgb(177, 187, 216) |
| HSL | hsl(225, 33%, 77%) |
| OKLCH | oklch(79.4% 0.043 270.4) |
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 #B1BBD8 | 1.91:1 | Fails | Lc -40.9 | Non-text elements, placeholder text |
| Black text on #B1BBD8 | 10.96:1 | AAA | Lc 67.3 | Content text, not long reading |
| #B1BBD8 text on white | 1.91:1 | Fails | Lc 36.6 | Non-text elements, placeholder text |
| #B1BBD8 text on black | 10.96:1 | AAA | Lc -65.9 | 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
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300 (this color)
#B1BBD8
oklch(79.4% 0.043 270.4)
-
Step 400
400
#909FCC
oklch(70.7% 0.068 270.3)
-
Step 500
500
#7587BF
oklch(63.2% 0.087 270.1)
-
Step 600
600
#5E70AB
oklch(55.6% 0.095 270.2)
-
Step 700
700
#4E5D93
oklch(49% 0.089 271.1)
-
Step 800
800
#404C77
oklch(42.6% 0.073 271.2)
-
Step 900
900
#364060
oklch(37.7% 0.057 270.3)
-
Step 950
950
#202638
oklch(27.1% 0.035 269.8)
#B1BBD8 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) | #B3BDD9 | 0.006 |
| Deuteranopia (no green cones) | #B0BAD7 | 0.003 |
| Tritanopia (no blue cones) | #A8C0C4 | 0.038 |
| Achromatopsia (no color) | #BBBBBB | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BBD8
#B1BBD8
oklch(79.4% 0.043 270.4)
- #C6BB9D
#C6BB9D
oklch(79.3% 0.043 90.3)
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 #B1BBD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.019
- Light Steel Blue #B0C4DE ΔE 0.023
- Light Grey Blue #9DBCD4 ΔE 0.027
- Light Cornflower Blue #98C1D9 ΔE 0.033
- Light Blue Grey #B7C9E2 ΔE 0.038
- French Gray #ADB5BD ΔE 0.038
- Silver #C0C0C0 ΔE 0.045
- Pastel Blue #A2BFFE ΔE 0.054
Use #B1BBD8 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.