#543A8B
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.129 295), rgb(84, 58, 139).
Aa
White text reads best on this color (8.91:1).
About this color
#543A8B is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.129 and its hue 295°. 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 8.91:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #543A8B |
| RGB | rgb(84, 58, 139) |
| HSL | hsl(259, 41%, 39%) |
| OKLCH | oklch(42.1% 0.129 295) |
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 #543A8B | 8.91:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #543A8B | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #543A8B text on white | 8.91:1 | AAA | Lc 90.1 | Preferred for body text |
| #543A8B text on black | 2.35:1 | Fails | Lc -12.1 | 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
#DBD4F3
oklch(88.5% 0.043 295.9)
-
Step 300
300
#C4B7ED
oklch(80.8% 0.076 295.7)
-
Step 400
400
#A691E4
oklch(70.8% 0.121 294.8)
-
Step 500
500
#9273DC
oklch(63.2% 0.155 295.2)
-
Step 600
600
#7D59C9
oklch(55.6% 0.167 295.2)
-
Step 700
700
#6948AE
oklch(49% 0.156 294.9)
-
Step 800
800 (this color)
#543A8B
oklch(42.1% 0.129 295)
-
Step 900
900
#463471
oklch(37.7% 0.101 294.6)
-
Step 950
950
#291F42
oklch(27% 0.064 294.9)
#543A8B 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) | #104A8E | 0.086 |
| Deuteranopia (no green cones) | #1A4889 | 0.081 |
| Tritanopia (no blue cones) | #464B5C | 0.103 |
| Achromatopsia (no color) | #4A4A4A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543A8B
#543A8B
oklch(42.1% 0.129 295)
- #4C5300
#4C5300
oklch(42.1% 0.096 115.2)
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 #543A8B, 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 0.032
- Rebecca Purple #663399 ΔE 0.042
- Twilight #4E518B ΔE 0.061
- Dusk #4E5481 ΔE 0.075
- Cobalt #1E488F ΔE 0.077
- Dusk Blue #26538D ΔE 0.085
- Chrysanthemum #560BAD ΔE 0.087
Use #543A8B 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.