#B1BDEE
Closest named color: Pastel Blue (#A2BFFE). oklch(80.6% 0.071 274), rgb(177, 189, 238).
Aa
Black text reads best on this color (11.38:1).
About this color
#B1BDEE is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.071 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.028 away. Black text reads best on it, at 11.38:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.38:1 |
| White text | 1.84:1 |
Values
| HEX | #B1BDEE |
| RGB | rgb(177, 189, 238) |
| HSL | hsl(228, 64%, 81%) |
| OKLCH | oklch(80.6% 0.071 274) |
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 #B1BDEE | 1.84:1 | Fails | Lc -38.8 | Non-text elements, placeholder text |
| Black text on #B1BDEE | 11.38:1 | AAA | Lc 69.2 | Content text, not long reading |
| #B1BDEE text on white | 1.84:1 | Fails | Lc 34.7 | Non-text elements, placeholder text |
| #B1BDEE text on black | 11.38:1 | AAA | Lc -67.9 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F4
oklch(88.6% 0.039 274.4)
-
Step 300
300 (this color)
#B1BDEE
oklch(80.6% 0.071 274)
-
Step 400
400
#8B9BE7
oklch(70.7% 0.113 274.1)
-
Step 500
500
#6F80E0
oklch(63.1% 0.145 273.9)
-
Step 600
600
#5967CE
oklch(55.6% 0.158 274.3)
-
Step 700
700
#4955B2
oklch(49% 0.147 274.1)
-
Step 800
800
#3C4690
oklch(42.6% 0.121 274.3)
-
Step 900
900
#333C73
oklch(37.8% 0.094 274)
-
Step 950
950
#1E2343
oklch(26.9% 0.06 275)
#B1BDEE 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) | #AFC1F0 | 0.010 |
| Deuteranopia (no green cones) | #AABDED | 0.009 |
| Tritanopia (no blue cones) | #A2C6CD | 0.064 |
| Achromatopsia (no color) | #BFBFBF | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BDEE
#B1BDEE
oklch(80.6% 0.071 274)
- #CEBF8B
#CEBF8B
oklch(80.5% 0.071 93.9)
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 #B1BDEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.028
- Light Steel Blue #B0C4DE ΔE 0.034
- Light Periwinkle #C1C6FC ΔE 0.036
- Cloudy Blue #ACC2D9 ΔE 0.038
- Light Blue Grey #B7C9E2 ΔE 0.042
- Baby Blue #A2CFFE ΔE 0.047
- Light Grey Blue #9DBCD4 ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.048
Use #B1BDEE 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.