#B166C4
Closest named color: Soft Purple (#A66FB5). oklch(63% 0.157 319.3), rgb(177, 102, 196).
Aa
Black text reads best on this color (5.56:1).
About this color
#B166C4 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.157 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Purple (#A66FB5), ΔE 0.038 away. Black text reads best on it, at 5.56:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Soft Purple (#A66FB5) |
| Black text | 5.56:1 |
| White text | 3.77:1 |
Values
| HEX | #B166C4 |
| RGB | rgb(177, 102, 196) |
| HSL | hsl(288, 44%, 58%) |
| OKLCH | oklch(63% 0.157 319.3) |
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 #B166C4 | 3.77:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #B166C4 | 5.56:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #B166C4 text on white | 3.77:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #B166C4 text on black | 5.56:1 | AA | Lc -36.7 | Non-text elements, placeholder 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 500.
-
Step 50
50
#F9F3FA
oklch(97.1% 0.011 321.3)
-
Step 100
100
#F1E5F3
oklch(93.5% 0.023 321.4)
-
Step 200
200
#E6D1EB
oklch(88.6% 0.042 319.7)
-
Step 300
300
#D7B1E0
oklch(80.9% 0.077 319.8)
-
Step 400
400
#C287D1
oklch(70.8% 0.123 319.3)
-
Step 500
500 (this color)
#B166C4
oklch(63% 0.157 319.3)
-
Step 600
600
#9D4BB1
oklch(55.7% 0.171 319.4)
-
Step 700
700
#863B98
oklch(49.1% 0.159 319.4)
-
Step 800
800
#6D327B
oklch(42.8% 0.131 319.6)
-
Step 900
900
#582D63
oklch(37.7% 0.101 319.2)
-
Step 950
950
#341B3A
oklch(27.1% 0.064 319.6)
#B166C4 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) | #567EC7 | 0.141 |
| Deuteranopia (no green cones) | #6C86C1 | 0.126 |
| Tritanopia (no blue cones) | #B2738C | 0.100 |
| Achromatopsia (no color) | #838383 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B166C4
#B166C4
oklch(63% 0.157 319.3)
- #519F3A
#519F3A
oklch(63.1% 0.157 139.2)
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 #B166C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Purple #A66FB5 ΔE 0.038
- Amethyst #9B5FC0 ΔE 0.044
- Medium Orchid #BA55D3 ΔE 0.046
- Deep Lilac #966EBD ΔE 0.050
- Wisteria #A87DC2 ΔE 0.056
- Pinky Purple #C94CBE ΔE 0.061
- Medium Purple #9370DB ΔE 0.062
- Dark Lilac #9C6DA5 ΔE 0.064
Use #B166C4 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.