#550AC6
Closest named color: Violet Blue (#510AC9). oklch(42.8% 0.239 288.2), rgb(85, 10, 198).
Aa
White text reads best on this color (9.35:1).
About this color
#550AC6 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.239 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Violet Blue (#510AC9), ΔE 0.010 away. White text reads best on it, at 9.35:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.239) |
| Temperature | cool |
| Nearest name | Violet Blue (#510AC9) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #550AC6 |
| RGB | rgb(85, 10, 198) |
| HSL | hsl(264, 90%, 41%) |
| OKLCH | oklch(42.8% 0.239 288.2) |
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 #550AC6 | 9.35:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #550AC6 | 2.24:1 | Fails | Lc 14.5 | Not readable |
| #550AC6 text on white | 9.35:1 | AAA | Lc 89.5 | Fine for body text |
| #550AC6 text on black | 2.24:1 | Fails | Lc -12.7 | Not readable |
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 800.
-
Step 50
50
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D7D4FF
oklch(88.6% 0.059 288.3)
-
Step 300
300
#BDB6FF
oklch(80.8% 0.102 288.3)
-
Step 400
400
#9E8DFF
oklch(70.8% 0.163 288.4)
-
Step 500
500
#896AFF
oklch(63.1% 0.212 288.4)
-
Step 600
600
#773DFF
oklch(55.6% 0.263 288.2)
-
Step 700
700
#6800F1
oklch(49.1% 0.281 288.2)
-
Step 800
800 (this color)
#550AC6
oklch(42.8% 0.239 288.2)
-
Step 900
900
#441C9B
oklch(37.6% 0.186 288.1)
-
Step 950
950
#27145B
oklch(26.9% 0.118 288)
#550AC6 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) | #004ACA | 0.113 |
| Deuteranopia (no green cones) | #0042C3 | 0.106 |
| Tritanopia (no blue cones) | #1E4F74 | 0.189 |
| Achromatopsia (no color) | #474747 | 0.241 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #550AC6
#550AC6
oklch(42.8% 0.239 288.2)
- #545200
#545200
oklch(42.7% 0.092 108.1)
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 #550AC6, closest first.
No curated palette has a color within ΔE 0.04 of #550AC6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Blue #510AC9 ΔE 0.010
- Purple Blue #5D21D0 ΔE 0.032
- Chrysanthemum #560BAD ΔE 0.042
- Imperial Purple #480CA8 ΔE 0.054
- Blurple #5539CC ΔE 0.056
- Indigo Blue #3A18B1 ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
Use #550AC6 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.