#B4BCFB
Closest named color: Pastel Blue (#A2BFFE). oklch(81.1% 0.089 278.6), rgb(180, 188, 251).
Aa
Black text reads best on this color (11.52:1).
About this color
#B4BCFB is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.089 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.023 away. Black text reads best on it, at 11.52:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.52:1 |
| White text | 1.82:1 |
Values
| HEX | #B4BCFB |
| RGB | rgb(180, 188, 251) |
| HSL | hsl(233, 90%, 85%) |
| OKLCH | oklch(81.1% 0.089 278.6) |
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 #B4BCFB | 1.82:1 | Fails | Lc -38.1 | Non-text elements, placeholder text |
| Black text on #B4BCFB | 11.52:1 | AAA | Lc 69.9 | Content text, not long reading |
| #B4BCFB text on white | 1.82:1 | Fails | Lc 34.0 | Non-text elements, placeholder text |
| #B4BCFB text on black | 11.52:1 | AAA | Lc -68.6 | 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
#E6E9FC
oklch(93.7% 0.026 278.7)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300 (this color)
#B4BCFB
oklch(81.1% 0.089 278.6)
-
Step 400
400
#8E95F8
oklch(70.6% 0.144 279)
-
Step 500
500
#7478F4
oklch(63.1% 0.182 278.4)
-
Step 600
600
#5F5DE3
oklch(55.7% 0.198 278.5)
-
Step 700
700
#4F4BC5
oklch(49.1% 0.184 278.6)
-
Step 800
800
#403FA0
oklch(42.8% 0.153 278.2)
-
Step 900
900
#36377F
oklch(37.8% 0.119 278.5)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#B4BCFB 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) | #AAC3FE | 0.020 |
| Deuteranopia (no green cones) | #A6BDF9 | 0.018 |
| Tritanopia (no blue cones) | #A2C8D2 | 0.080 |
| Achromatopsia (no color) | #C0C0C0 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4BCFB
#B4BCFB
oklch(81.1% 0.089 278.6)
- #D0C37E
#D0C37E
oklch(81.2% 0.09 98.9)
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 #B4BCFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.023
- Light Periwinkle #C1C6FC ΔE 0.033
- Pale Violet #CEAEFA ΔE 0.048
- Light Violet #D6B4FC ΔE 0.050
- Baby Blue #A2CFFE ΔE 0.051
- Light Steel Blue #B0C4DE ΔE 0.053
- Carolina Blue #8AB8FE ΔE 0.054
- Light Blue Grey #B7C9E2 ΔE 0.057
Use #B4BCFB 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.