#B1BDF4
Closest named color: Pastel Blue (#A2BFFE). oklch(80.8% 0.079 274.9), rgb(177, 189, 244).
Aa
Black text reads best on this color (11.45:1).
About this color
#B1BDF4 is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.079 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.022 away. Black text reads best on it, at 11.45:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.45:1 |
| White text | 1.83:1 |
Values
| HEX | #B1BDF4 |
| RGB | rgb(177, 189, 244) |
| HSL | hsl(229, 75%, 83%) |
| OKLCH | oklch(80.8% 0.079 274.9) |
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 #B1BDF4 | 1.83:1 | Fails | Lc -38.5 | Non-text elements, placeholder text |
| Black text on #B1BDF4 | 11.45:1 | AAA | Lc 69.5 | Content text, not long reading |
| #B1BDF4 text on white | 1.83:1 | Fails | Lc 34.3 | Non-text elements, placeholder text |
| #B1BDF4 text on black | 11.45:1 | AAA | Lc -68.2 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300 (this color)
#B1BDF4
oklch(80.8% 0.079 274.9)
-
Step 400
400
#8A99EF
oklch(70.7% 0.127 275.2)
-
Step 500
500
#6F7DE9
oklch(63% 0.161 275.2)
-
Step 600
600
#5964D8
oklch(55.7% 0.176 275.1)
-
Step 700
700
#4952BB
oklch(49.1% 0.163 275)
-
Step 800
800
#3C4497
oklch(42.7% 0.134 275)
-
Step 900
900
#323A78
oklch(37.6% 0.105 274.7)
-
Step 950
950
#1D2246
oklch(26.8% 0.067 275)
#B1BDF4 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) | #ADC2F6 | 0.013 |
| Deuteranopia (no green cones) | #A8BDF3 | 0.012 |
| Tritanopia (no blue cones) | #A0C7D0 | 0.070 |
| Achromatopsia (no color) | #BFBFBF | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BDF4
#B1BDF4
oklch(80.8% 0.079 274.9)
- #D0C085
#D0C085
oklch(80.7% 0.079 94.8)
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 #B1BDF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.022
- Light Periwinkle #C1C6FC ΔE 0.034
- Light Steel Blue #B0C4DE ΔE 0.042
- Cloudy Blue #ACC2D9 ΔE 0.046
- Baby Blue #A2CFFE ΔE 0.047
- Light Blue Grey #B7C9E2 ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.053
- Light Grey Blue #9DBCD4 ΔE 0.055
Use #B1BDF4 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.