#B1BCF9
Closest named color: Pastel Blue (#A2BFFE). oklch(80.8% 0.087 276.4), rgb(177, 188, 249).
Aa
Black text reads best on this color (11.43:1).
About this color
#B1BCF9 is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.087 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.020 away. Black text reads best on it, at 11.43:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.43:1 |
| White text | 1.83:1 |
Values
| HEX | #B1BCF9 |
| RGB | rgb(177, 188, 249) |
| HSL | hsl(231, 86%, 84%) |
| OKLCH | oklch(80.8% 0.087 276.4) |
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 #B1BCF9 | 1.83:1 | Fails | Lc -38.6 | Non-text elements, placeholder text |
| Black text on #B1BCF9 | 11.43:1 | AAA | Lc 69.4 | Content text, not long reading |
| #B1BCF9 text on white | 1.83:1 | Fails | Lc 34.4 | Non-text elements, placeholder text |
| #B1BCF9 text on black | 11.43:1 | AAA | Lc -68.1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D0D7FA
oklch(88.5% 0.049 276.4)
-
Step 300
300 (this color)
#B1BCF9
oklch(80.8% 0.087 276.4)
-
Step 400
400
#8A97F6
oklch(70.6% 0.139 276.3)
-
Step 500
500
#707AF3
oklch(63.2% 0.179 276.4)
-
Step 600
600
#5A5FE1
oklch(55.5% 0.194 276.4)
-
Step 700
700
#4B4EC4
oklch(49.2% 0.18 276.4)
-
Step 800
800
#3D419E
oklch(42.8% 0.148 276.3)
-
Step 900
900
#33387E
oklch(37.7% 0.117 276.2)
-
Step 950
950
#1E214A
oklch(27% 0.075 277)
#B1BCF9 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) | #AAC2FC | 0.016 |
| Deuteranopia (no green cones) | #A5BDF7 | 0.016 |
| Tritanopia (no blue cones) | #9EC7D1 | 0.077 |
| Achromatopsia (no color) | #BFBFBF | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BCF9
#B1BCF9
oklch(80.8% 0.087 276.4)
- #D1C17F
#D1C17F
oklch(80.9% 0.087 96.2)
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 #B1BCF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.020
- Light Periwinkle #C1C6FC ΔE 0.035
- Baby Blue #A2CFFE ΔE 0.050
- Light Steel Blue #B0C4DE ΔE 0.050
- Carolina Blue #8AB8FE ΔE 0.050
- Pale Violet #CEAEFA ΔE 0.051
- Light Violet #D6B4FC ΔE 0.054
- Cloudy Blue #ACC2D9 ΔE 0.054
Use #B1BCF9 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.