#B4C3EF
Closest named color: Light Periwinkle (#C1C6FC). oklch(82.1% 0.064 270.2), rgb(180, 195, 239).
Aa
Black text reads best on this color (11.99:1).
About this color
#B4C3EF is a light, muted blue. In OKLCH its lightness is 82%, its chroma 0.064 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Light Periwinkle (#C1C6FC), ΔE 0.026 away. Black text reads best on it, at 11.99:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 11.99:1 |
| White text | 1.75:1 |
Values
| HEX | #B4C3EF |
| RGB | rgb(180, 195, 239) |
| HSL | hsl(225, 65%, 82%) |
| OKLCH | oklch(82.1% 0.064 270.2) |
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 #B4C3EF | 1.75:1 | Fails | Lc -35.9 | Non-text elements, placeholder text |
| Black text on #B4C3EF | 11.99:1 | AAA | Lc 71.9 | Content text, not long reading |
| #B4C3EF text on white | 1.75:1 | Fails | Lc 31.9 | Non-text elements, placeholder text |
| #B4C3EF text on black | 11.99:1 | AAA | Lc -70.8 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D9F2
oklch(88.6% 0.036 269.9)
-
Step 300
300 (this color)
#B4C3EF
oklch(82.1% 0.064 270.2)
-
Step 400
400
#889DE1
oklch(70.7% 0.103 270.5)
-
Step 500
500
#6B84D9
oklch(63.2% 0.131 270)
-
Step 600
600
#546BC6
oklch(55.5% 0.143 270.5)
-
Step 700
700
#4459AB
oklch(49% 0.133 270.1)
-
Step 800
800
#38498B
oklch(42.6% 0.111 270.3)
-
Step 900
900
#303E6F
oklch(37.7% 0.086 269.9)
-
Step 950
950
#1C2441
oklch(26.9% 0.055 270.7)
#B4C3EF 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) | #B6C6F1 | 0.008 |
| Deuteranopia (no green cones) | #B1C1EE | 0.007 |
| Tritanopia (no blue cones) | #A5CBD2 | 0.057 |
| Achromatopsia (no color) | #C4C4C4 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4C3EF
#B4C3EF
oklch(82.1% 0.064 270.2)
- #D4C395
#D4C395
oklch(82% 0.064 90.2)
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 #B4C3EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Periwinkle #C1C6FC ΔE 0.026
- Light Steel Blue #B0C4DE ΔE 0.026
- Light Blue Grey #B7C9E2 ΔE 0.029
- Cloudy Blue #ACC2D9 ΔE 0.034
- Pastel Blue #A2BFFE ΔE 0.035
- Baby Blue #A2CFFE ΔE 0.036
- Light Cornflower Blue #98C1D9 ΔE 0.049
- Light Grey Blue #9DBCD4 ΔE 0.051
Use #B4C3EF 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.