#B1BBFF
Closest named color: Pastel Blue (#A2BFFE). oklch(80.9% 0.097 277.5), rgb(177, 187, 255).
Aa
Black text reads best on this color (11.42:1).
About this color
#B1BBFF is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.097 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.021 away. Black text reads best on it, at 11.42:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.42:1 |
| White text | 1.83:1 |
Values
| HEX | #B1BBFF |
| RGB | rgb(177, 187, 255) |
| HSL | hsl(232, 100%, 85%) |
| OKLCH | oklch(80.9% 0.097 277.5) |
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 #B1BBFF | 1.83:1 | Fails | Lc -38.6 | Non-text elements, placeholder text |
| Black text on #B1BBFF | 11.42:1 | AAA | Lc 69.4 | Content text, not long reading |
| #B1BBFF text on white | 1.83:1 | Fails | Lc 34.5 | Non-text elements, placeholder text |
| #B1BBFF text on black | 11.42:1 | 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
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#D0D7FD
oklch(88.6% 0.053 277)
-
Step 300
300 (this color)
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7176FD
oklch(63.2% 0.197 277.6)
-
Step 600
600
#5C59ED
oklch(55.6% 0.216 277.6)
-
Step 700
700
#4C48CE
oklch(49.1% 0.2 277.4)
-
Step 800
800
#3E3CA6
oklch(42.6% 0.165 277.6)
-
Step 900
900
#343584
oklch(37.7% 0.13 277.6)
-
Step 950
950
#1E204D
oklch(27% 0.081 277.5)
#B1BBFF 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) | #A7C2FF | 0.021 |
| Deuteranopia (no green cones) | #A2BCFD | 0.019 |
| Tritanopia (no blue cones) | #9DC8D3 | 0.086 |
| Achromatopsia (no color) | #BFBFBF | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BBFF
#B1BBFF
oklch(80.9% 0.097 277.5)
- #D1C177
#D1C177
oklch(80.8% 0.096 97.5)
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 #B1BBFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.021
- Light Periwinkle #C1C6FC ΔE 0.039
- Pale Violet #CEAEFA ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.049
- Light Violet #D6B4FC ΔE 0.052
- Baby Blue #A2CFFE ΔE 0.054
- Light Steel Blue #B0C4DE ΔE 0.060
- Sky #82CAFC ΔE 0.064
Use #B1BBFF 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.