#B5C9FA
Closest named color: Light Periwinkle (#C1C6FC). oklch(83.8% 0.072 267.5), rgb(181, 201, 250).
Aa
Black text reads best on this color (12.69:1).
About this color
#B5C9FA is a light, moderately saturated blue. In OKLCH its lightness is 84%, its chroma 0.072 and its hue 267°. 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 12.69:1.
| Hue family | Blues |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 12.69:1 |
| White text | 1.65:1 |
Values
| HEX | #B5C9FA |
| RGB | rgb(181, 201, 250) |
| HSL | hsl(223, 87%, 85%) |
| OKLCH | oklch(83.8% 0.072 267.5) |
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 #B5C9FA | 1.65:1 | Fails | Lc -32.5 | Non-text elements, placeholder text |
| Black text on #B5C9FA | 12.69:1 | AAA | Lc 74.9 | Content text, not long reading |
| #B5C9FA text on white | 1.65:1 | Fails | Lc 28.9 | Dividers and decoration only |
| #B5C9FA text on black | 12.69:1 | AAA | Lc -74.0 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300 (this color)
#B5C9FA
oklch(83.8% 0.072 267.5)
-
Step 400
400
#819EE9
oklch(70.8% 0.115 267.3)
-
Step 500
500
#6283E2
oklch(63% 0.148 267.6)
-
Step 600
600
#4A6BD0
oklch(55.6% 0.16 267.4)
-
Step 700
700
#3C59B4
oklch(49.2% 0.148 267.4)
-
Step 800
800
#314992
oklch(42.7% 0.124 267.3)
-
Step 900
900
#2B3E74
oklch(37.8% 0.095 267.2)
-
Step 950
950
#192444
oklch(26.9% 0.062 267.8)
#B5C9FA 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) | #BACCFC | 0.011 |
| Deuteranopia (no green cones) | #B4C6F9 | 0.008 |
| Tritanopia (no blue cones) | #A3D3D9 | 0.066 |
| Achromatopsia (no color) | #C9C9C9 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B5C9FA
#B5C9FA
oklch(83.8% 0.072 267.5)
- #DEC894
#DEC894
oklch(83.9% 0.072 87.7)
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 #B5C9FA, 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
- Light Blue Grey #B7C9E2 ΔE 0.034
- Pastel Blue #A2BFFE ΔE 0.039
- Light Steel Blue #B0C4DE ΔE 0.040
- Cloudy Blue #ACC2D9 ΔE 0.049
- Light Sky Blue #87CEFA ΔE 0.052
- Light Blue #ADD8E6 ΔE 0.057
Use #B5C9FA 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.