#543C8D
Closest named color: Dark Slate Blue (#483D8B). oklch(42.6% 0.129 293.9), rgb(84, 60, 141).
Aa
White text reads best on this color (8.72:1).
About this color
#543C8D is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.129 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.021 away. White text reads best on it, at 8.72:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #543C8D |
| RGB | rgb(84, 60, 141) |
| HSL | hsl(258, 40%, 39%) |
| OKLCH | oklch(42.6% 0.129 293.9) |
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 #543C8D | 8.72:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #543C8D | 2.40:1 | Fails | Lc 14.4 | Not readable |
| #543C8D text on white | 8.72:1 | AAA | Lc 89.6 | Fine for body text |
| #543C8D text on black | 2.40:1 | Fails | Lc -12.6 | 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
#EAE7F7
oklch(93.5% 0.022 294.6)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C3B8ED
oklch(81% 0.075 294.2)
-
Step 400
400
#A591E4
oklch(70.7% 0.12 294.2)
-
Step 500
500
#9074DC
oklch(63.2% 0.153 294)
-
Step 600
600
#7B5ACA
oklch(55.7% 0.167 293.9)
-
Step 700
700
#6849AF
oklch(49.2% 0.156 293.9)
-
Step 800
800 (this color)
#543C8D
oklch(42.6% 0.129 293.9)
-
Step 900
900
#453471
oklch(37.6% 0.101 293.8)
-
Step 950
950
#281F42
oklch(26.9% 0.064 293.5)
#543C8D 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) | #134C90 | 0.083 |
| Deuteranopia (no green cones) | #1B4A8B | 0.079 |
| Tritanopia (no blue cones) | #454D5E | 0.104 |
| Achromatopsia (no color) | #4B4B4B | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543C8D
#543C8D
oklch(42.6% 0.129 293.9)
- #4E5400
#4E5400
oklch(42.6% 0.096 114.4)
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 #543C8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.021
- Blueberry #464196 ΔE 0.029
- Rebecca Purple #663399 ΔE 0.042
- Twilight #4E518B ΔE 0.056
- Dusk #4E5481 ΔE 0.071
- Cobalt #1E488F ΔE 0.075
- Dusk Blue #26538D ΔE 0.081
- Denim Blue #3B5B92 ΔE 0.086
Use #543C8D 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.