#B3B9DA
Closest named color: Cloudy Blue (#ACC2D9). oklch(79.2% 0.047 277.1), rgb(179, 185, 218).
Aa
Black text reads best on this color (10.86:1).
About this color
#B3B9DA is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.047 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Cloudy Blue (#ACC2D9), ΔE 0.026 away. Black text reads best on it, at 10.86:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Cloudy Blue (#ACC2D9) |
| Black text | 10.86:1 |
| White text | 1.93:1 |
Values
| HEX | #B3B9DA |
| RGB | rgb(179, 185, 218) |
| HSL | hsl(231, 35%, 78%) |
| OKLCH | oklch(79.2% 0.047 277.1) |
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 #B3B9DA | 1.93:1 | Fails | Lc -41.4 | Non-text elements, placeholder text |
| Black text on #B3B9DA | 10.86:1 | AAA | Lc 66.9 | Content text, not long reading |
| #B3B9DA text on white | 1.93:1 | Fails | Lc 37.0 | Non-text elements, placeholder text |
| #B3B9DA text on black | 10.86:1 | AAA | Lc -65.4 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300 (this color)
#B3B9DA
oklch(79.2% 0.047 277.1)
-
Step 400
400
#949DD0
oklch(70.8% 0.075 276.5)
-
Step 500
500
#7B84C4
oklch(63.2% 0.097 277.1)
-
Step 600
600
#646CB0
oklch(55.5% 0.106 277.3)
-
Step 700
700
#535A97
oklch(49% 0.098 277.2)
-
Step 800
800
#444A7B
oklch(42.7% 0.081 277.1)
-
Step 900
900
#393E63
oklch(37.7% 0.064 277)
-
Step 950
950
#21253A
oklch(27.1% 0.04 275.2)
#B3B9DA 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) | #B0BCDC | 0.008 |
| Deuteranopia (no green cones) | #AEB9D9 | 0.007 |
| Tritanopia (no blue cones) | #AABFC4 | 0.042 |
| Achromatopsia (no color) | #BABABA | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3B9DA
#B3B9DA
oklch(79.2% 0.047 277.1)
- #C3BC9A
#C3BC9A
oklch(79.2% 0.047 97.7)
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 #B3B9DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cloudy Blue #ACC2D9 ΔE 0.026
- Light Steel Blue #B0C4DE ΔE 0.028
- Light Grey Blue #9DBCD4 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.039
- French Gray #ADB5BD ΔE 0.042
- Light Blue Grey #B7C9E2 ΔE 0.042
- Silver #C0C0C0 ΔE 0.050
- Pastel Blue #A2BFFE ΔE 0.052
Use #B3B9DA 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.