#A151B1
Closest named color: Amethyst (#9B5FC0). oklch(57% 0.163 320.7), rgb(161, 81, 177).
Aa
White text reads best on this color (4.85:1).
About this color
#A151B1 is a medium-dark, vivid purple. In OKLCH its lightness is 57%, its chroma 0.163 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.036 away. White text reads best on it, at 4.85:1.
| Hue family | Purples |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #A151B1 |
| RGB | rgb(161, 81, 177) |
| HSL | hsl(290, 38%, 51%) |
| OKLCH | oklch(57% 0.163 320.7) |
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 #A151B1 | 4.85:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #A151B1 | 4.32:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #A151B1 text on white | 4.85:1 | AA | Lc 73.2 | Content text, not long reading |
| #A151B1 text on black | 4.32:1 | AA large text | Lc -28.5 | Dividers and decoration only |
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
#F9F3FA
oklch(97.1% 0.011 321.3)
-
Step 100
100
#F1E6F3
oklch(93.7% 0.021 321)
-
Step 200
200
#E6D1EA
oklch(88.5% 0.041 320.8)
-
Step 300
300
#D7B2DE
oklch(81% 0.073 320.9)
-
Step 400
400
#C288CD
oklch(70.8% 0.117 321)
-
Step 500
500
#B168C0
oklch(63.1% 0.149 320.6)
-
Step 600
600 (this color)
#A151B1
oklch(57% 0.163 320.7)
-
Step 700
700
#863D94
oklch(49.1% 0.152 320.9)
-
Step 800
800
#6D3378
oklch(42.7% 0.126 321)
-
Step 900
900
#582E61
oklch(37.7% 0.097 320.3)
-
Step 950
950
#341B39
oklch(27% 0.063 320.8)
#A151B1 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) | #406CB4 | 0.153 |
| Deuteranopia (no green cones) | #5A74AE | 0.135 |
| Tritanopia (no blue cones) | #A25F79 | 0.102 |
| Achromatopsia (no color) | #717171 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A151B1
#A151B1
oklch(57% 0.163 320.7)
- #358D24
#358D24
oklch(56.9% 0.163 140.8)
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 #A151B1, closest first.
No curated palette has a color within ΔE 0.04 of #A151B1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.036
- Purply #983FB2 ΔE 0.043
- Deep Lavender #8D5EB7 ΔE 0.043
- Deep Lilac #966EBD ΔE 0.067
- Medium Orchid #BA55D3 ΔE 0.068
- Soft Purple #A66FB5 ΔE 0.071
- Dark Lilac #9C6DA5 ΔE 0.073
- Pinky Purple #C94CBE ΔE 0.076
Use #A151B1 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.