#B1B1EF
Closest named color: Pastel Blue (#A2BFFE). oklch(78.3% 0.088 284.2), rgb(177, 177, 239).
Aa
Black text reads best on this color (10.40:1).
About this color
#B1B1EF is a light, moderately saturated purple. In OKLCH its lightness is 78%, its chroma 0.088 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.039 away. Black text reads best on it, at 10.40:1.
| Hue family | Purples |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.40:1 |
| White text | 2.01:1 |
Values
| HEX | #B1B1EF |
| RGB | rgb(177, 177, 239) |
| HSL | hsl(240, 66%, 82%) |
| OKLCH | oklch(78.3% 0.088 284.2) |
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 #B1B1EF | 2.01:1 | Fails | Lc -43.6 | Non-text elements, placeholder text |
| Black text on #B1B1EF | 10.40:1 | AAA | Lc 64.8 | Content text, not long reading |
| #B1B1EF text on white | 2.01:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #B1B1EF text on black | 10.40:1 | AAA | Lc -63.2 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FB
oklch(93.6% 0.026 283.5)
-
Step 200
200
#D5D5F9
oklch(88.4% 0.049 285.3)
-
Step 300
300 (this color)
#B1B1EF
oklch(78.3% 0.088 284.2)
-
Step 400
400
#9793F4
oklch(70.7% 0.14 284.1)
-
Step 500
500
#8074F0
oklch(63% 0.18 284.4)
-
Step 600
600
#6B59DF
oklch(55.6% 0.196 284.1)
-
Step 700
700
#5A48C1
oklch(49.1% 0.181 284.3)
-
Step 800
800
#493C9C
oklch(42.7% 0.15 284.2)
-
Step 900
900
#3C357C
oklch(37.7% 0.116 283.8)
-
Step 950
950
#232049
oklch(27.1% 0.074 283.6)
#B1B1EF 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) | #A0B8F2 | 0.026 |
| Deuteranopia (no green cones) | #9EB5ED | 0.027 |
| Tritanopia (no blue cones) | #A3BCC7 | 0.076 |
| Achromatopsia (no color) | #B6B6B6 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1B1EF
#B1B1EF
oklch(78.3% 0.088 284.2)
- #C1BB78
#C1BB78
oklch(78.2% 0.088 103.8)
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 #B1B1EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.039
- Pale Violet #CEAEFA ΔE 0.046
- Carolina Blue #8AB8FE ΔE 0.051
- Light Violet #D6B4FC ΔE 0.058
- Light Periwinkle #C1C6FC ΔE 0.060
- Lilac #CEA2FD ΔE 0.061
- Light Grey Blue #9DBCD4 ΔE 0.062
- Light Steel Blue #B0C4DE ΔE 0.063
Use #B1B1EF 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.