#B3BBF3
Closest named color: Pastel Blue (#A2BFFE). oklch(80.5% 0.08 278.1), rgb(179, 187, 243).
Aa
Black text reads best on this color (11.31:1).
About this color
#B3BBF3 is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.080 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.025 away. Black text reads best on it, at 11.31:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.31:1 |
| White text | 1.85:1 |
Values
| HEX | #B3BBF3 |
| RGB | rgb(179, 187, 243) |
| HSL | hsl(233, 73%, 83%) |
| OKLCH | oklch(80.5% 0.08 278.1) |
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 #B3BBF3 | 1.85:1 | Fails | Lc -39.1 | Non-text elements, placeholder text |
| Black text on #B3BBF3 | 11.31:1 | AAA | Lc 68.9 | Content text, not long reading |
| #B3BBF3 text on white | 1.85:1 | Fails | Lc 34.9 | Non-text elements, placeholder text |
| #B3BBF3 text on black | 11.31:1 | AAA | Lc -67.6 | Content text, not long reading |
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 300.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F7
oklch(88.5% 0.044 278.4)
-
Step 300
300 (this color)
#B3BBF3
oklch(80.5% 0.08 278.1)
-
Step 400
400
#8F98EF
oklch(70.8% 0.127 278.1)
-
Step 500
500
#757BE9
oklch(63% 0.163 278.3)
-
Step 600
600
#5F61D8
oklch(55.5% 0.178 278.2)
-
Step 700
700
#4F50BB
oklch(49.1% 0.164 278.1)
-
Step 800
800
#404297
oklch(42.6% 0.136 277.9)
-
Step 900
900
#363978
oklch(37.7% 0.105 278)
-
Step 950
950
#1F2246
oklch(27% 0.066 277.4)
#B3BBF3 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) | #ABC1F5 | 0.017 |
| Deuteranopia (no green cones) | #A7BCF2 | 0.016 |
| Tritanopia (no blue cones) | #A3C5CE | 0.071 |
| Achromatopsia (no color) | #BEBEBE | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3BBF3
#B3BBF3
oklch(80.5% 0.08 278.1)
- #CDC185
#CDC185
oklch(80.7% 0.08 98.2)
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 #B3BBF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.025
- Light Periwinkle #C1C6FC ΔE 0.036
- Light Steel Blue #B0C4DE ΔE 0.044
- Cloudy Blue #ACC2D9 ΔE 0.048
- Pale Violet #CEAEFA ΔE 0.051
- Light Blue Grey #B7C9E2 ΔE 0.051
- Baby Blue #A2CFFE ΔE 0.052
- Carolina Blue #8AB8FE ΔE 0.054
Use #B3BBF3 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.