#B9DDFA
Closest named color: Light Blue (#ADD8E6). oklch(88.1% 0.055 242.6), rgb(185, 221, 250).
Aa
Black text reads best on this color (14.78:1).
About this color
#B9DDFA is a light, muted blue. In OKLCH its lightness is 88%, its chroma 0.055 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.033 away. Black text reads best on it, at 14.78:1.
| Hue family | Blues |
| Lightness | light (88%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 14.78:1 |
| White text | 1.42:1 |
Values
| HEX | #B9DDFA |
| RGB | rgb(185, 221, 250) |
| HSL | hsl(207, 87%, 85%) |
| OKLCH | oklch(88.1% 0.055 242.6) |
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 #B9DDFA | 1.42:1 | Fails | Lc -23.0 | Dividers and decoration only |
| Black text on #B9DDFA | 14.78:1 | AAA | Lc 83.5 | Fine for body text |
| #B9DDFA text on white | 1.42:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #B9DDFA text on black | 14.78:1 | AAA | Lc -83.2 | 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
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200 (this color)
#B9DDFA
oklch(88.1% 0.055 242.6)
-
Step 300
300
#99C7EB
oklch(81% 0.07 242.3)
-
Step 400
400
#5BA8E2
oklch(70.6% 0.115 243.2)
-
Step 500
500
#1791D9
oklch(63% 0.145 242.6)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#042941
oklch(27% 0.06 242.6)
#B9DDFA 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) | #D1DCFB | 0.030 |
| Deuteranopia (no green cones) | #C9D5F9 | 0.027 |
| Tritanopia (no blue cones) | #A6E4E6 | 0.045 |
| Achromatopsia (no color) | #D8D8D8 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B9DDFA
#B9DDFA
oklch(88.1% 0.055 242.6)
- #F3D1B3
#F3D1B3
oklch(88.2% 0.055 63.4)
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 #B9DDFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.033
- Powder Blue #B0E0E6 ΔE 0.034
- Cadet Gray #CED4DA ΔE 0.047
- Celeste #A8DADC ΔE 0.048
- Baby Blue #A2CFFE ΔE 0.050
- Pale Turquoise #AFEEEE ΔE 0.054
- Light Blue Grey #B7C9E2 ΔE 0.054
- Diamond #B9F2FF ΔE 0.054
Use #B9DDFA 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.