#B9CEFB
Closest named color: Light Periwinkle (#C1C6FC). oklch(85.1% 0.067 265.4), rgb(185, 206, 251).
Aa
Black text reads best on this color (13.28:1).
About this color
#B9CEFB is a light, muted blue. In OKLCH its lightness is 85%, its chroma 0.067 and its hue 265°. 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 13.28:1.
| Hue family | Blues |
| Lightness | light (85%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Light Periwinkle (#C1C6FC) |
| Black text | 13.28:1 |
| White text | 1.58:1 |
Values
| HEX | #B9CEFB |
| RGB | rgb(185, 206, 251) |
| HSL | hsl(221, 89%, 85%) |
| OKLCH | oklch(85.1% 0.067 265.4) |
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 #B9CEFB | 1.58:1 | Fails | Lc -29.8 | Dividers and decoration only |
| Black text on #B9CEFB | 13.28:1 | AAA | Lc 77.4 | Fine for body text |
| #B9CEFB text on white | 1.58:1 | Fails | Lc 26.4 | Dividers and decoration only |
| #B9CEFB text on black | 13.28:1 | AAA | Lc -76.6 | Fine for body text |
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 200.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200 (this color)
#B9CEFB
oklch(85.1% 0.067 265.4)
-
Step 300
300
#A6C0F9
oklch(80.9% 0.086 265.5)
-
Step 400
400
#779DF6
oklch(70.6% 0.138 265.5)
-
Step 500
500
#5582F3
oklch(63.2% 0.176 265.3)
-
Step 600
600
#3B68E2
oklch(55.6% 0.192 265.3)
-
Step 700
700
#2E56C4
oklch(49.2% 0.178 265.2)
-
Step 800
800
#27479E
oklch(42.7% 0.147 265.3)
-
Step 900
900
#233D7E
oklch(37.8% 0.115 265)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#B9CEFB 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) | #C0D1FD | 0.013 |
| Deuteranopia (no green cones) | #BACBFA | 0.008 |
| Tritanopia (no blue cones) | #A8D7DD | 0.060 |
| Achromatopsia (no color) | #CECECE | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9CEFB
#B9CEFB
oklch(85.1% 0.067 265.4)
- #E2CB9C
#E2CB9C
oklch(85% 0.067 84.9)
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 #B9CEFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Periwinkle #C1C6FC ΔE 0.023
- Baby Blue #A2CFFE ΔE 0.027
- Light Blue Grey #B7C9E2 ΔE 0.035
- Light Steel Blue #B0C4DE ΔE 0.045
- Light Blue #ADD8E6 ΔE 0.048
- Pastel Blue #A2BFFE ΔE 0.053
- Light Lavender #DFC5FE ΔE 0.055
- Cloudy Blue #ACC2D9 ΔE 0.055
Use #B9CEFB 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.