#B5CAFF
Closest named color: Light Periwinkle (#C1C6FC). oklch(84.2% 0.078 267.9), rgb(181, 202, 255).
Aa
Black text reads best on this color (12.85:1).
About this color
#B5CAFF is a light, moderately saturated blue. In OKLCH its lightness is 84%, its chroma 0.078 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Light Periwinkle (#C1C6FC), ΔE 0.017 away. Black text reads best on it, at 12.85:1.
| Hue family | Blues |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 12.85:1 |
| White text | 1.63:1 |
Values
| HEX | #B5CAFF |
| RGB | rgb(181, 202, 255) |
| HSL | hsl(223, 100%, 85%) |
| OKLCH | oklch(84.2% 0.078 267.9) |
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 #B5CAFF | 1.63:1 | Fails | Lc -31.8 | Non-text elements, placeholder text |
| Black text on #B5CAFF | 12.85:1 | AAA | Lc 75.6 | Fine for body text |
| #B5CAFF text on white | 1.63:1 | Fails | Lc 28.2 | Dividers and decoration only |
| #B5CAFF text on black | 12.85:1 | AAA | Lc -74.7 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300 (this color)
#B5CAFF
oklch(84.2% 0.078 267.9)
-
Step 400
400
#7F9DEF
oklch(70.8% 0.125 267.9)
-
Step 500
500
#6082E9
oklch(63.1% 0.159 267.9)
-
Step 600
600
#4869D7
oklch(55.6% 0.173 267.8)
-
Step 700
700
#3A57BB
oklch(49.2% 0.161 267.8)
-
Step 800
800
#304797
oklch(42.6% 0.134 268.2)
-
Step 900
900
#2A3D78
oklch(37.7% 0.103 267.8)
-
Step 950
950
#192446
oklch(27% 0.065 268.3)
#B5CAFF 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) | #B9CEFF | 0.012 |
| Deuteranopia (no green cones) | #B3C7FE | 0.008 |
| Tritanopia (no blue cones) | #A1D4DC | 0.069 |
| Achromatopsia (no color) | #CACACA | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B5CAFF
#B5CAFF
oklch(84.2% 0.078 267.9)
- #E0C990
#E0C990
oklch(84.2% 0.078 88.5)
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 #B5CAFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Periwinkle #C1C6FC ΔE 0.017
- Baby Blue #A2CFFE ΔE 0.025
- Pastel Blue #A2BFFE ΔE 0.040
- Light Blue Grey #B7C9E2 ΔE 0.041
- Light Steel Blue #B0C4DE ΔE 0.047
- Light Sky Blue #87CEFA ΔE 0.053
- Cloudy Blue #ACC2D9 ΔE 0.055
- Light Lavender #DFC5FE ΔE 0.056
Use #B5CAFF 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.