#B9DEFB
Closest named color: Powder Blue (#B0E0E6). oklch(88.4% 0.056 241.9), rgb(185, 222, 251).
Aa
Black text reads best on this color (14.90:1).
About this color
#B9DEFB is a light, muted blue. In OKLCH its lightness is 88%, its chroma 0.056 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Powder Blue (#B0E0E6), ΔE 0.034 away. Black text reads best on it, at 14.90:1.
| Hue family | Blues |
| Lightness | light (88%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Powder Blue (#B0E0E6) |
| Black text | 14.90:1 |
| White text | 1.40:1 |
Values
| HEX | #B9DEFB |
| RGB | rgb(185, 222, 251) |
| HSL | hsl(206, 89%, 85%) |
| OKLCH | oklch(88.4% 0.056 241.9) |
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 #B9DEFB | 1.40:1 | Fails | Lc -22.5 | Dividers and decoration only |
| Black text on #B9DEFB | 14.90:1 | AAA | Lc 84.0 | Fine for body text |
| #B9DEFB text on white | 1.40:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #B9DEFB text on black | 14.90:1 | AAA | Lc -83.7 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200 (this color)
#B9DEFB
oklch(88.4% 0.056 241.9)
-
Step 300
300
#98C7EC
oklch(80.9% 0.072 242.5)
-
Step 400
400
#59A9E2
oklch(70.8% 0.115 241.9)
-
Step 500
500
#0B92DA
oklch(63.2% 0.147 241.8)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#032941
oklch(26.9% 0.061 242.1)
#B9DEFB 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) | #D2DDFC | 0.031 |
| Deuteranopia (no green cones) | #C9D6FA | 0.027 |
| Tritanopia (no blue cones) | #A6E5E7 | 0.045 |
| Achromatopsia (no color) | #D9D9D9 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9DEFB
#B9DEFB
oklch(88.4% 0.056 241.9)
- #F4D1B4
#F4D1B4
oklch(88.3% 0.055 61.7)
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 #B9DEFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Powder Blue #B0E0E6 ΔE 0.034
- Light Blue #ADD8E6 ΔE 0.035
- Cadet Gray #CED4DA ΔE 0.048
- Celeste #A8DADC ΔE 0.049
- Diamond #B9F2FF ΔE 0.052
- Baby Blue #A2CFFE ΔE 0.052
- Pale Turquoise #AFEEEE ΔE 0.052
- Robin's Egg Blue #98EFF9 ΔE 0.055
Use #B9DEFB 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.