#B1BCDB
Closest named color: Cloudy Blue (#ACC2D9). oklch(79.7% 0.046 269.9), rgb(177, 188, 219).
Aa
Black text reads best on this color (11.08:1).
About this color
#B1BCDB is a light, muted blue. In OKLCH its lightness is 80%, its chroma 0.046 and its hue 270°. 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 11.08:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 11.08:1 |
| White text | 1.89:1 |
Values
| HEX | #B1BCDB |
| RGB | rgb(177, 188, 219) |
| HSL | hsl(224, 37%, 78%) |
| OKLCH | oklch(79.7% 0.046 269.9) |
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 #B1BCDB | 1.89:1 | Fails | Lc -40.3 | Non-text elements, placeholder text |
| Black text on #B1BCDB | 11.08:1 | AAA | Lc 67.9 | Content text, not long reading |
| #B1BCDB text on white | 1.89:1 | Fails | Lc 36.0 | Non-text elements, placeholder text |
| #B1BCDB text on black | 11.08:1 | AAA | Lc -66.5 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EB
oklch(88.5% 0.026 268.8)
-
Step 300
300 (this color)
#B1BCDB
oklch(79.7% 0.046 269.9)
-
Step 400
400
#8F9FCF
oklch(70.8% 0.073 270.2)
-
Step 500
500
#7387C2
oklch(63.2% 0.092 269.3)
-
Step 600
600
#5C70AF
oklch(55.7% 0.101 269.6)
-
Step 700
700
#4C5D96
oklch(49.1% 0.094 270.1)
-
Step 800
800
#3E4C7A
oklch(42.6% 0.079 270)
-
Step 900
900
#354062
oklch(37.8% 0.06 269.7)
-
Step 950
950
#1F2539
oklch(26.9% 0.038 270.9)
#B1BCDB 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) | #B3BEDC | 0.006 |
| Deuteranopia (no green cones) | #B0BBDA | 0.003 |
| Tritanopia (no blue cones) | #A7C2C6 | 0.041 |
| Achromatopsia (no color) | #BCBCBC | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BCDB
#B1BCDB
oklch(79.7% 0.046 269.9)
- #C8BC9C
#C8BC9C
oklch(79.7% 0.045 89.9)
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 #B1BCDB, 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 0.021
- Light Grey Blue #9DBCD4 ΔE 0.028
- Light Cornflower Blue #98C1D9 ΔE 0.033
- Light Blue Grey #B7C9E2 ΔE 0.035
- French Gray #ADB5BD ΔE 0.043
- Silver #C0C0C0 ΔE 0.047
- Pastel Blue #A2BFFE ΔE 0.051
Use #B1BCDB 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.