#A51FDB
Closest named color: Vibrant Purple (#AD03DE). oklch(55.5% 0.259 312.8), rgb(165, 31, 219).
Aa
White text reads best on this color (5.49:1).
About this color
#A51FDB is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.259 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Vibrant Purple (#AD03DE), ΔE 0.019 away. White text reads best on it, at 5.49:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.259) |
| Temperature | in between |
| Nearest name | Vibrant Purple (#AD03DE) |
| Black text | 3.81:1 |
| White text | 5.49:1 |
Values
| HEX | #A51FDB |
| RGB | rgb(165, 31, 219) |
| HSL | hsl(283, 75%, 49%) |
| OKLCH | oklch(55.5% 0.259 312.8) |
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 #A51FDB | 5.49:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #A51FDB | 3.81:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #A51FDB text on white | 5.49:1 | AA | Lc 75.8 | Fine for body text |
| #A51FDB text on black | 3.81:1 | AA large text | Lc -26.0 | 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
#F9F3FD
oklch(97.2% 0.015 312.2)
-
Step 100
100
#F2E4FA
oklch(93.6% 0.033 313.5)
-
Step 200
200
#E8CDF8
oklch(88.4% 0.065 312.9)
-
Step 300
300
#DBAAF7
oklch(80.9% 0.118 312.8)
-
Step 400
400
#C878F2
oklch(70.6% 0.187 312.8)
-
Step 500
500
#BA4CED
oklch(63.1% 0.239 313)
-
Step 600
600 (this color)
#A51FDB
oklch(55.5% 0.259 312.8)
-
Step 700
700
#8E08BE
oklch(49.1% 0.241 313)
-
Step 800
800
#73129A
oklch(42.7% 0.2 312.8)
-
Step 900
900
#5D1C7A
oklch(37.7% 0.154 312.9)
-
Step 950
950
#361348
oklch(27% 0.098 312)
#A51FDB 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) | #0063E0 | 0.217 |
| Deuteranopia (no green cones) | #006BD7 | 0.221 |
| Tritanopia (no blue cones) | #9F5483 | 0.170 |
| Achromatopsia (no color) | #696969 | 0.261 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A51FDB
#A51FDB
oklch(55.5% 0.259 312.8)
- #4C8500
#4C8500
oklch(55.5% 0.157 132.9)
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 #A51FDB, closest first.
No curated palette has a color within ΔE 0.04 of #A51FDB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vibrant Purple #AD03DE ΔE 0.019
- Dark Orchid #9932CC ΔE 0.035
- Dark Violet #9400D3 ΔE 0.042
- Bright Violet #AD0AFD ΔE 0.052
- Electric Purple #AA23FF ΔE 0.055
- Blue Violet #8A2BE2 ΔE 0.056
- Vivid Purple #9900FA ΔE 0.058
- Neon Purple #BC13FE ΔE 0.066
Use #A51FDB 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.