#B1BFDB
Closest named color: Cloudy Blue (#ACC2D9). oklch(80.3% 0.043 264.3), rgb(177, 191, 219).
Aa
Black text reads best on this color (11.34:1).
About this color
#B1BFDB is a light, muted blue. In OKLCH its lightness is 80%, its chroma 0.043 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.011 away. Black text reads best on it, at 11.34:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 11.34:1 |
| White text | 1.85:1 |
Values
| HEX | #B1BFDB |
| RGB | rgb(177, 191, 219) |
| HSL | hsl(220, 37%, 78%) |
| OKLCH | oklch(80.3% 0.043 264.3) |
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 #B1BFDB | 1.85:1 | Fails | Lc -39.0 | Non-text elements, placeholder text |
| Black text on #B1BFDB | 11.34:1 | AAA | Lc 69.0 | Content text, not long reading |
| #B1BFDB text on white | 1.85:1 | Fails | Lc 34.9 | Non-text elements, placeholder text |
| #B1BFDB text on black | 11.34:1 | AAA | Lc -67.7 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300 (this color)
#B1BFDB
oklch(80.3% 0.043 264.3)
-
Step 400
400
#8BA1CC
oklch(70.8% 0.068 263.6)
-
Step 500
500
#6F89BF
oklch(63.2% 0.087 264.3)
-
Step 600
600
#5772AB
oklch(55.6% 0.095 264.2)
-
Step 700
700
#475F93
oklch(49% 0.089 264.5)
-
Step 800
800
#3B4E77
oklch(42.7% 0.073 264.6)
-
Step 900
900
#324160
oklch(37.7% 0.057 264.1)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#B1BFDB 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) | #B6C1DC | 0.009 |
| Deuteranopia (no green cones) | #B3BDDA | 0.005 |
| Tritanopia (no blue cones) | #A7C4C8 | 0.037 |
| Achromatopsia (no color) | #BEBEBE | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BFDB
#B1BFDB
oklch(80.3% 0.043 264.3)
- #CCBDA0
#CCBDA0
oklch(80.3% 0.043 83.8)
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 #B1BFDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.011
- Light Steel Blue #B0C4DE ΔE 0.013
- Light Blue Grey #B7C9E2 ΔE 0.028
- Light Grey Blue #9DBCD4 ΔE 0.029
- Light Cornflower Blue #98C1D9 ΔE 0.031
- Silver #C0C0C0 ΔE 0.043
- French Gray #ADB5BD ΔE 0.044
- Pastel Blue #A2BFFE ΔE 0.053
Use #B1BFDB 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.