#B3DEFA
Closest named color: Light Blue (#ADD8E6). oklch(87.9% 0.059 236.9), rgb(179, 222, 250).
Aa
Black text reads best on this color (14.74:1).
About this color
#B3DEFA is a light, muted blue. In OKLCH its lightness is 88%, its chroma 0.059 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.030 away. Black text reads best on it, at 14.74:1.
| Hue family | Blues |
| Lightness | light (88%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 14.74:1 |
| White text | 1.42:1 |
Values
| HEX | #B3DEFA |
| RGB | rgb(179, 222, 250) |
| HSL | hsl(204, 88%, 84%) |
| OKLCH | oklch(87.9% 0.059 236.9) |
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 #B3DEFA | 1.42:1 | Fails | Lc -23.2 | Dividers and decoration only |
| Black text on #B3DEFA | 14.74:1 | AAA | Lc 83.3 | Fine for body text |
| #B3DEFA text on white | 1.42:1 | Fails | Lc 20.4 | Dividers and decoration only |
| #B3DEFA text on black | 14.74:1 | AAA | Lc -83.0 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF7
oklch(93.5% 0.022 239.4)
-
Step 200
200 (this color)
#B3DEFA
oklch(87.9% 0.059 236.9)
-
Step 300
300
#91C9EC
oklch(81% 0.076 236.4)
-
Step 400
400
#49ABE3
oklch(70.7% 0.122 237.2)
-
Step 500
500
#0094D1
oklch(63.1% 0.137 236.6)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#B3DEFA 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) | #D2DDFB | 0.038 |
| Deuteranopia (no green cones) | #C8D5FA | 0.033 |
| Tritanopia (no blue cones) | #9DE5E7 | 0.045 |
| Achromatopsia (no color) | #D8D8D8 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3DEFA
#B3DEFA
oklch(87.9% 0.059 236.9)
- #F7CEB2
#F7CEB2
oklch(88% 0.06 56.1)
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 #B3DEFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.030
- Powder Blue #B0E0E6 ΔE 0.031
- Celeste #A8DADC ΔE 0.044
- Baby Blue #A2CFFE ΔE 0.049
- Cadet Gray #CED4DA ΔE 0.051
- Pale Turquoise #AFEEEE ΔE 0.051
- Robin's Egg Blue #98EFF9 ΔE 0.051
- Diamond #B9F2FF ΔE 0.053
Use #B3DEFA 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.