#B155A9
Closest named color: Amethyst (#9B5FC0). oklch(59.2% 0.159 330.7), rgb(177, 85, 169).
Aa
Black text reads best on this color (4.74:1).
About this color
#B155A9 is a medium-dark, vivid purple. In OKLCH its lightness is 59%, its chroma 0.159 and its hue 331°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.054 away. Black text reads best on it, at 4.74:1.
| Hue family | Purples |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 4.74:1 |
| White text | 4.42:1 |
Values
| HEX | #B155A9 |
| RGB | rgb(177, 85, 169) |
| HSL | hsl(305, 37%, 51%) |
| OKLCH | oklch(59.2% 0.159 330.7) |
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 #B155A9 | 4.42:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #B155A9 | 4.74:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #B155A9 text on white | 4.42:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #B155A9 text on black | 4.74:1 | AA | Lc -31.4 | 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 600.
-
Step 50
50
#F9F3F8
oklch(97% 0.009 330.9)
-
Step 100
100
#F2E5F0
oklch(93.5% 0.02 330.7)
-
Step 200
200
#E9D0E5
oklch(88.4% 0.039 331.2)
-
Step 300
300
#DCB0D6
oklch(80.8% 0.072 330.8)
-
Step 400
400
#C986C2
oklch(70.8% 0.114 330.4)
-
Step 500
500
#BA65B2
oklch(63.1% 0.146 330.7)
-
Step 600
600 (this color)
#B155A9
oklch(59.2% 0.159 330.7)
-
Step 700
700
#8D3B87
oklch(49.1% 0.147 330.4)
-
Step 800
800
#73316D
oklch(42.7% 0.122 331.1)
-
Step 900
900
#5D2C59
oklch(37.7% 0.096 330.4)
-
Step 950
950
#371A34
oklch(27% 0.061 331)
#B155A9 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) | #5170AC | 0.159 |
| Deuteranopia (no green cones) | #6C7CA6 | 0.141 |
| Tritanopia (no blue cones) | #B75D77 | 0.086 |
| Achromatopsia (no color) | #787878 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B155A9
#B155A9
oklch(59.2% 0.159 330.7)
- #069748
#069748
oklch(59.2% 0.159 150.7)
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 #B155A9, closest first.
No curated palette has a color within ΔE 0.04 of #B155A9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.054
- Pinky Purple #C94CBE ΔE 0.056
- Soft Purple #A66FB5 ΔE 0.059
- Purpley Pink #C83CB9 ΔE 0.063
- Dark Lilac #9C6DA5 ΔE 0.065
- Medium Orchid #BA55D3 ΔE 0.066
- Deep Lavender #8D5EB7 ΔE 0.068
- Light Plum #9D5783 ΔE 0.070
Use #B155A9 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.