#543A7D
Closest named color: Dark Slate Blue (#483D8B). oklch(41.1% 0.11 299.4), rgb(84, 58, 125).
Aa
White text reads best on this color (9.21:1).
About this color
#543A7D is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.110 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.031 away. White text reads best on it, at 9.21:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #543A7D |
| RGB | rgb(84, 58, 125) |
| HSL | hsl(263, 37%, 36%) |
| OKLCH | oklch(41.1% 0.11 299.4) |
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 #543A7D | 9.21:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #543A7D | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #543A7D text on white | 9.21:1 | AAA | Lc 91.0 | Preferred for body text |
| #543A7D text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F5
oklch(93.5% 0.019 299.1)
-
Step 200
200
#DCD4EE
oklch(88.4% 0.036 299.7)
-
Step 300
300
#C6B8E5
oklch(80.9% 0.064 299.2)
-
Step 400
400
#AA92D8
oklch(70.7% 0.103 299.5)
-
Step 500
500
#9575CD
oklch(63% 0.132 299.4)
-
Step 600
600
#805CBA
oklch(55.5% 0.144 299.4)
-
Step 700
700
#6D4CA0
oklch(49.2% 0.132 299.7)
-
Step 800
800 (this color)
#543A7D
oklch(41.1% 0.11 299.4)
-
Step 900
900
#493668
oklch(37.8% 0.085 299.9)
-
Step 950
950
#2A203D
oklch(27% 0.054 298.6)
#543A7D 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) | #22477F | 0.075 |
| Deuteranopia (no green cones) | #29477B | 0.070 |
| Tritanopia (no blue cones) | #4C4756 | 0.085 |
| Achromatopsia (no color) | #484848 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543A7D
#543A7D
oklch(41.1% 0.11 299.4)
- #455100
#455100
oklch(41% 0.096 119)
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 #543A7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Blueberry #464196 ΔE 0.048
- Rebecca Purple #663399 ΔE 0.059
- Twilight #4E518B ΔE 0.062
- Dusk #4E5481 ΔE 0.071
- Cobalt #1E488F ΔE 0.081
- Dusty Grape #545775 ΔE 0.086
- Dusk Blue #26538D ΔE 0.086
Use #543A7D 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.