#B1BBEF
Closest named color: Pastel Blue (#A2BFFE). oklch(80.2% 0.075 276.1), rgb(177, 187, 239).
Aa
Black text reads best on this color (11.22:1).
About this color
#B1BBEF is a light, moderately saturated blue. In OKLCH its lightness is 80%, its chroma 0.075 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.026 away. Black text reads best on it, at 11.22:1.
| Hue family | Blues |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.22:1 |
| White text | 1.87:1 |
Values
| HEX | #B1BBEF |
| RGB | rgb(177, 187, 239) |
| HSL | hsl(230, 66%, 82%) |
| OKLCH | oklch(80.2% 0.075 276.1) |
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 #B1BBEF | 1.87:1 | Fails | Lc -39.6 | Non-text elements, placeholder text |
| Black text on #B1BBEF | 11.22:1 | AAA | Lc 68.5 | Content text, not long reading |
| #B1BBEF text on white | 1.87:1 | Fails | Lc 35.4 | Non-text elements, placeholder text |
| #B1BBEF text on black | 11.22:1 | AAA | Lc -67.1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D1D7F5
oklch(88.4% 0.042 276.6)
-
Step 300
300 (this color)
#B1BBEF
oklch(80.2% 0.075 276.1)
-
Step 400
400
#8D99EA
oklch(70.6% 0.119 276.5)
-
Step 500
500
#727EE4
oklch(63.1% 0.152 276.1)
-
Step 600
600
#5C65D2
oklch(55.6% 0.166 276.1)
-
Step 700
700
#4C53B6
oklch(49.1% 0.154 276.1)
-
Step 800
800
#3E4493
oklch(42.6% 0.128 276.2)
-
Step 900
900
#343A75
oklch(37.6% 0.1 276.1)
-
Step 950
950
#1F2345
oklch(27.1% 0.063 276.3)
#B1BBEF 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) | #ACC0F1 | 0.013 |
| Deuteranopia (no green cones) | #A8BBEE | 0.012 |
| Tritanopia (no blue cones) | #A2C5CD | 0.067 |
| Achromatopsia (no color) | #BDBDBD | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BBEF
#B1BBEF
oklch(80.2% 0.075 276.1)
- #CCBF87
#CCBF87
oklch(80.2% 0.075 96.6)
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 #B1BBEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.026
- Light Periwinkle #C1C6FC ΔE 0.039
- Light Steel Blue #B0C4DE ΔE 0.039
- Cloudy Blue #ACC2D9 ΔE 0.042
- Light Blue Grey #B7C9E2 ΔE 0.048
- Light Grey Blue #9DBCD4 ΔE 0.050
- Baby Blue #A2CFFE ΔE 0.052
- Light Cornflower Blue #98C1D9 ΔE 0.052
Use #B1BBEF 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.