#55328C
Closest named color: Dark Slate Blue (#483D8B). oklch(40.9% 0.143 297.6), rgb(85, 50, 140).
Aa
White text reads best on this color (9.45:1).
About this color
#55328C is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.143 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.033 away. White text reads best on it, at 9.45:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.22:1 |
| White text | 9.45:1 |
Values
| HEX | #55328C |
| RGB | rgb(85, 50, 140) |
| HSL | hsl(263, 47%, 37%) |
| OKLCH | oklch(40.9% 0.143 297.6) |
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 #55328C | 9.45:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #55328C | 2.22:1 | Fails | Lc 12.5 | Not readable |
| #55328C text on white | 9.45:1 | AAA | Lc 91.4 | Preferred for body text |
| #55328C text on black | 2.22:1 | Fails | Lc -10.9 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F5
oklch(88.5% 0.047 297.5)
-
Step 300
300
#C6B6F0
oklch(80.9% 0.082 297.2)
-
Step 400
400
#AB8DE9
oklch(70.7% 0.134 297.9)
-
Step 500
500
#976EE2
oklch(63.1% 0.17 297.6)
-
Step 600
600
#8252D0
oklch(55.5% 0.187 297.5)
-
Step 700
700
#6E42B4
oklch(49.1% 0.173 297.4)
-
Step 800
800 (this color)
#55328C
oklch(40.9% 0.143 297.6)
-
Step 900
900
#493174
oklch(37.7% 0.111 297.3)
-
Step 950
950
#2B1D44
oklch(27% 0.071 298)
#55328C 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) | #00468F | 0.100 |
| Deuteranopia (no green cones) | #03458A | 0.100 |
| Tritanopia (no blue cones) | #48465A | 0.110 |
| Achromatopsia (no color) | #464646 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55328C
#55328C
oklch(40.9% 0.143 297.6)
- #465000
#465000
oklch(40.8% 0.095 117.7)
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 #55328C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.033
- Rebecca Purple #663399 ΔE 0.039
- Blueberry #464196 ΔE 0.044
- Chrysanthemum #560BAD ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.077
- Twilight #4E518B ΔE 0.079
- Indigo #4B0082 ΔE 0.080
- Cobalt #1E488F ΔE 0.088
Use #55328C 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.