#B1C3FA
Closest named color: Light Periwinkle (#C1C6FC). oklch(82.3% 0.08 270.5), rgb(177, 195, 250).
Aa
Black text reads best on this color (12.05:1).
About this color
#B1C3FA is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.080 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Light Periwinkle (#C1C6FC), ΔE 0.023 away. Black text reads best on it, at 12.05:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 12.05:1 |
| White text | 1.74:1 |
Values
| HEX | #B1C3FA |
| RGB | rgb(177, 195, 250) |
| HSL | hsl(225, 88%, 84%) |
| OKLCH | oklch(82.3% 0.08 270.5) |
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 #B1C3FA | 1.74:1 | Fails | Lc -35.6 | Non-text elements, placeholder text |
| Black text on #B1C3FA | 12.05:1 | AAA | Lc 72.2 | Content text, not long reading |
| #B1C3FA text on white | 1.74:1 | Fails | Lc 31.7 | Non-text elements, placeholder text |
| #B1C3FA text on black | 12.05:1 | AAA | Lc -71.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300 (this color)
#B1C3FA
oklch(82.3% 0.08 270.5)
-
Step 400
400
#829BF1
oklch(70.6% 0.129 270.5)
-
Step 500
500
#6580EC
oklch(63.2% 0.164 270.5)
-
Step 600
600
#4E66DA
oklch(55.5% 0.179 270.7)
-
Step 700
700
#3F54BD
oklch(49% 0.166 270.5)
-
Step 800
800
#344699
oklch(42.8% 0.137 270.4)
-
Step 900
900
#2D3B7A
oklch(37.6% 0.108 271)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#B1C3FA 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) | #B2C7FC | 0.010 |
| Deuteranopia (no green cones) | #ACC1F9 | 0.009 |
| Tritanopia (no blue cones) | #9DCED6 | 0.072 |
| Achromatopsia (no color) | #C4C4C4 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1C3FA
#B1C3FA
oklch(82.3% 0.08 270.5)
- #D9C389
#D9C389
oklch(82.2% 0.079 89.6)
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 #B1C3FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Periwinkle #C1C6FC ΔE 0.023
- Pastel Blue #A2BFFE ΔE 0.024
- Baby Blue #A2CFFE ΔE 0.033
- Light Steel Blue #B0C4DE ΔE 0.042
- Light Blue Grey #B7C9E2 ΔE 0.043
- Cloudy Blue #ACC2D9 ΔE 0.048
- Light Sky Blue #87CEFA ΔE 0.053
- Sky #82CAFC ΔE 0.053
Use #B1C3FA 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.