#B4C5FA
Closest named color: Light Periwinkle (#C1C6FC). oklch(82.9% 0.077 270.8), rgb(180, 197, 250).
Aa
Black text reads best on this color (12.30:1).
About this color
#B4C5FA is a light, moderately saturated blue. In OKLCH its lightness is 83%, its chroma 0.077 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Light Periwinkle (#C1C6FC), ΔE 0.018 away. Black text reads best on it, at 12.30:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 12.30:1 |
| White text | 1.70:1 |
Values
| HEX | #B4C5FA |
| RGB | rgb(180, 197, 250) |
| HSL | hsl(225, 88%, 84%) |
| OKLCH | oklch(82.9% 0.077 270.8) |
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 #B4C5FA | 1.70:1 | Fails | Lc -34.4 | Non-text elements, placeholder text |
| Black text on #B4C5FA | 12.30:1 | AAA | Lc 73.3 | Content text, not long reading |
| #B4C5FA text on white | 1.70:1 | Fails | Lc 30.6 | Non-text elements, placeholder text |
| #B4C5FA text on black | 12.30:1 | AAA | Lc -72.2 | 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
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F6
oklch(88.4% 0.043 270.9)
-
Step 300
300 (this color)
#B4C5FA
oklch(82.9% 0.077 270.8)
-
Step 400
400
#849CED
oklch(70.8% 0.122 270.5)
-
Step 500
500
#6780E8
oklch(63% 0.158 271.1)
-
Step 600
600
#5067D6
oklch(55.6% 0.172 271)
-
Step 700
700
#4155B9
oklch(49% 0.159 270.9)
-
Step 800
800
#354696
oklch(42.6% 0.132 270.8)
-
Step 900
900
#2E3C77
oklch(37.7% 0.102 270.8)
-
Step 950
950
#1B2446
oklch(27.1% 0.064 270.5)
#B4C5FA 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) | #B5C9FC | 0.010 |
| Deuteranopia (no green cones) | #AFC3F9 | 0.009 |
| Tritanopia (no blue cones) | #A2CFD7 | 0.069 |
| Achromatopsia (no color) | #C6C6C6 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4C5FA
#B4C5FA
oklch(82.9% 0.077 270.8)
- #DAC68D
#DAC68D
oklch(83% 0.078 91)
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 #B4C5FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Periwinkle #C1C6FC ΔE 0.018
- Pastel Blue #A2BFFE ΔE 0.030
- Baby Blue #A2CFFE ΔE 0.031
- Light Blue Grey #B7C9E2 ΔE 0.039
- Light Steel Blue #B0C4DE ΔE 0.041
- Cloudy Blue #ACC2D9 ΔE 0.048
- Light Sky Blue #87CEFA ΔE 0.054
- Sky #82CAFC ΔE 0.056
Use #B4C5FA 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.