#B9DEFF
Closest named color: Light Blue (#ADD8E6). oklch(88.5% 0.06 245.5), rgb(185, 222, 255).
Aa
Black text reads best on this color (14.95:1).
About this color
#B9DEFF is a light, muted blue. In OKLCH its lightness is 88%, its chroma 0.060 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.039 away. Black text reads best on it, at 14.95:1.
| Hue family | Blues |
| Lightness | light (88%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 14.95:1 |
| White text | 1.40:1 |
Values
| HEX | #B9DEFF |
| RGB | rgb(185, 222, 255) |
| HSL | hsl(208, 100%, 86%) |
| OKLCH | oklch(88.5% 0.06 245.5) |
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 #B9DEFF | 1.40:1 | Fails | Lc -22.3 | Dividers and decoration only |
| Black text on #B9DEFF | 14.95:1 | AAA | Lc 84.2 | Fine for body text |
| #B9DEFF text on white | 1.40:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #B9DEFF text on black | 14.95:1 | AAA | Lc -83.9 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200 (this color)
#B9DEFF
oklch(88.5% 0.06 245.5)
-
Step 300
300
#97C6F0
oklch(80.8% 0.078 245.9)
-
Step 400
400
#58A8E9
oklch(70.8% 0.124 245.3)
-
Step 500
500
#0A90E2
oklch(63.2% 0.158 245.4)
-
Step 600
600
#0079C0
oklch(55.7% 0.141 245.3)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#004571
oklch(37.8% 0.096 245.5)
-
Step 950
950
#032944
oklch(27.1% 0.065 245.1)
#B9DEFF 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) | #D1DEFF | 0.030 |
| Deuteranopia (no green cones) | #C8D6FE | 0.026 |
| Tritanopia (no blue cones) | #A5E6E9 | 0.049 |
| Achromatopsia (no color) | #DADADA | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9DEFF
#B9DEFF
oklch(88.5% 0.06 245.5)
- #F5D2B0
#F5D2B0
oklch(88.5% 0.06 66.1)
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 #B9DEFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.039
- Powder Blue #B0E0E6 ΔE 0.040
- Baby Blue #A2CFFE ΔE 0.051
- Cadet Gray #CED4DA ΔE 0.053
- Diamond #B9F2FF ΔE 0.053
- Celeste #A8DADC ΔE 0.054
- Pale Turquoise #AFEEEE ΔE 0.056
- Robin's Egg Blue #98EFF9 ΔE 0.057
Use #B9DEFF 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.