#A551CE
Closest named color: Medium Orchid (#BA55D3). oklch(59.2% 0.195 313), rgb(165, 81, 206).
Aa
Black text reads best on this color (4.66:1).
About this color
#A551CE is a medium-dark, vivid purple. In OKLCH its lightness is 59%, its chroma 0.195 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Orchid (#BA55D3), ΔE 0.041 away. Black text reads best on it, at 4.66:1.
| Hue family | Purples |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.195) |
| Temperature | in between |
| Nearest name | Medium Orchid (#BA55D3) |
| Black text | 4.66:1 |
| White text | 4.49:1 |
Values
| HEX | #A551CE |
| RGB | rgb(165, 81, 206) |
| HSL | hsl(280, 56%, 56%) |
| OKLCH | oklch(59.2% 0.195 313) |
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 #A551CE | 4.49:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #A551CE | 4.66:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #A551CE text on white | 4.49:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #A551CE text on black | 4.66:1 | AA | Lc -31.0 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#F0E5F6
oklch(93.6% 0.025 314)
-
Step 200
200
#E5D0F1
oklch(88.5% 0.05 313.4)
-
Step 300
300
#D5B0E9
oklch(80.9% 0.088 313.6)
-
Step 400
400
#BF85DE
oklch(70.7% 0.14 313.1)
-
Step 500
500
#AE63D5
oklch(63.1% 0.178 312.8)
-
Step 600
600 (this color)
#A551CE
oklch(59.2% 0.195 313)
-
Step 700
700
#8336A8
oklch(49.1% 0.181 312.7)
-
Step 800
800
#6B2E88
oklch(42.8% 0.15 313)
-
Step 900
900
#572A6D
oklch(37.7% 0.118 313.1)
-
Step 950
950
#331A40
oklch(27.1% 0.074 312.9)
#A551CE 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) | #2472D2 | 0.177 |
| Deuteranopia (no green cones) | #4A79CB | 0.155 |
| Tritanopia (no blue cones) | #A16888 | 0.131 |
| Achromatopsia (no color) | #777777 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A551CE
#A551CE
oklch(59.2% 0.195 313)
- #539100
#539100
oklch(59.1% 0.167 133)
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 #A551CE, closest first.
No curated palette has a color within ΔE 0.04 of #A551CE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Orchid #BA55D3 ΔE 0.041
- Amethyst #9B5FC0 ΔE 0.041
- Lighter Purple #A55AF4 ΔE 0.058
- Purply #983FB2 ΔE 0.059
- Dark Orchid #9932CC ΔE 0.060
- Deep Lavender #8D5EB7 ΔE 0.061
- Purpley #8756E4 ΔE 0.064
- Medium Purple #9370DB ΔE 0.071
Use #A551CE 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.