#B1BFD3
Closest named color: Cloudy Blue (#ACC2D9). oklch(80% 0.032 257.2), rgb(177, 191, 211).
Aa
Black text reads best on this color (11.26:1).
About this color
#B1BFD3 is a light, muted blue. In OKLCH its lightness is 80%, its chroma 0.032 and its hue 257°. 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 11.26:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 11.26:1 |
| White text | 1.86:1 |
Values
| HEX | #B1BFD3 |
| RGB | rgb(177, 191, 211) |
| HSL | hsl(215, 28%, 76%) |
| OKLCH | oklch(80% 0.032 257.2) |
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 #B1BFD3 | 1.86:1 | Fails | Lc -39.4 | Non-text elements, placeholder text |
| Black text on #B1BFD3 | 11.26:1 | AAA | Lc 68.7 | Content text, not long reading |
| #B1BFD3 text on white | 1.86:1 | Fails | Lc 35.2 | Non-text elements, placeholder text |
| #B1BFD3 text on black | 11.26:1 | AAA | Lc -67.3 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300 (this color)
#B1BFD3
oklch(80% 0.032 257.2)
-
Step 400
400
#8DA2C1
oklch(70.7% 0.051 258)
-
Step 500
500
#708BB2
oklch(63.1% 0.067 257.5)
-
Step 600
600
#58759D
oklch(55.6% 0.071 256.6)
-
Step 700
700
#486286
oklch(49.1% 0.066 256.6)
-
Step 800
800
#3B506D
oklch(42.7% 0.055 256.6)
-
Step 900
900
#334259
oklch(37.6% 0.044 258.8)
-
Step 950
950
#1E2734
oklch(27% 0.028 257.5)
#B1BFD3 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) | #B8C0D4 | 0.010 |
| Deuteranopia (no green cones) | #B5BCD3 | 0.009 |
| Tritanopia (no blue cones) | #A9C3C5 | 0.028 |
| Achromatopsia (no color) | #BEBEBE | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BFD3
#B1BFD3
oklch(80% 0.032 257.2)
- #CABCA7
#CABCA7
oklch(80.1% 0.033 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 #B1BFD3, 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 0.017
- Light Grey Blue #9DBCD4 ΔE 0.028
- Light Cornflower Blue #98C1D9 ΔE 0.031
- Light Blue Grey #B7C9E2 ΔE 0.031
- Silver #C0C0C0 ΔE 0.033
- French Gray #ADB5BD ΔE 0.036
- Thistle #D8BFD8 ΔE 0.055
Use #B1BFD3 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.