#B1C4FA
Closest named color: Light Periwinkle (#C1C6FC). oklch(82.5% 0.079 269.5), rgb(177, 196, 250).
Aa
Black text reads best on this color (12.14:1).
About this color
#B1C4FA is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.079 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Light Periwinkle (#C1C6FC), ΔE 0.022 away. Black text reads best on it, at 12.14:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 12.14:1 |
| White text | 1.72:1 |
Values
| HEX | #B1C4FA |
| RGB | rgb(177, 196, 250) |
| HSL | hsl(224, 88%, 84%) |
| OKLCH | oklch(82.5% 0.079 269.5) |
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 #B1C4FA | 1.72:1 | Fails | Lc -35.1 | Non-text elements, placeholder text |
| Black text on #B1C4FA | 12.14:1 | AAA | Lc 72.6 | Content text, not long reading |
| #B1C4FA text on white | 1.72:1 | Fails | Lc 31.3 | Non-text elements, placeholder text |
| #B1C4FA text on black | 12.14:1 | AAA | Lc -71.5 | 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
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300 (this color)
#B1C4FA
oklch(82.5% 0.079 269.5)
-
Step 400
400
#819CF0
oklch(70.7% 0.127 269.4)
-
Step 500
500
#6381EA
oklch(63.1% 0.161 269.4)
-
Step 600
600
#4C67D9
oklch(55.6% 0.177 269.8)
-
Step 700
700
#3D55BC
oklch(49% 0.164 269.5)
-
Step 800
800
#324698
oklch(42.6% 0.136 269.5)
-
Step 900
900
#2C3C79
oklch(37.7% 0.105 269.7)
-
Step 950
950
#1A2447
oklch(27.1% 0.066 269.6)
#B1C4FA 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) | #B3C8FC | 0.011 |
| Deuteranopia (no green cones) | #ADC2F9 | 0.008 |
| Tritanopia (no blue cones) | #9DCED6 | 0.071 |
| Achromatopsia (no color) | #C5C5C5 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1C4FA
#B1C4FA
oklch(82.5% 0.079 269.5)
- #DAC48A
#DAC48A
oklch(82.5% 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 #B1C4FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Periwinkle #C1C6FC ΔE 0.022
- Pastel Blue #A2BFFE ΔE 0.025
- Baby Blue #A2CFFE ΔE 0.031
- Light Steel Blue #B0C4DE ΔE 0.041
- Light Blue Grey #B7C9E2 ΔE 0.041
- Cloudy Blue #ACC2D9 ΔE 0.048
- Light Sky Blue #87CEFA ΔE 0.051
- Sky #82CAFC ΔE 0.053
Use #B1C4FA 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.