#543C7F
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.11 298), rgb(84, 60, 127).
Aa
White text reads best on this color (9.01:1).
About this color
#543C7F is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.110 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 0.029 away. White text reads best on it, at 9.01:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #543C7F |
| RGB | rgb(84, 60, 127) |
| HSL | hsl(261, 36%, 37%) |
| OKLCH | oklch(41.6% 0.11 298) |
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 #543C7F | 9.01:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #543C7F | 2.32:1 | Fails | Lc 13.5 | Not readable |
| #543C7F text on white | 9.01:1 | AAA | Lc 90.5 | Preferred for body text |
| #543C7F text on black | 2.32:1 | Fails | Lc -11.8 | 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
#DBD5EE
oklch(88.5% 0.035 296.7)
-
Step 300
300
#C5B8E5
oklch(80.8% 0.064 298.2)
-
Step 400
400
#A893D8
oklch(70.8% 0.101 297.7)
-
Step 500
500
#9476CE
oklch(63.1% 0.132 298.3)
-
Step 600
600
#7E5DBB
oklch(55.5% 0.143 297.8)
-
Step 700
700
#6B4CA1
oklch(49% 0.133 298.2)
-
Step 800
800 (this color)
#543C7F
oklch(41.6% 0.11 298)
-
Step 900
900
#473669
oklch(37.6% 0.086 297.5)
-
Step 950
950
#2A203D
oklch(27% 0.054 298.6)
#543C7F 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) | #244981 | 0.072 |
| Deuteranopia (no green cones) | #2A487D | 0.067 |
| Tritanopia (no blue cones) | #4B4957 | 0.087 |
| Achromatopsia (no color) | #494949 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543C7F
#543C7F
oklch(41.6% 0.11 298)
- #485200
#485200
oklch(41.5% 0.096 117.5)
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 #543C7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.029
- Blueberry #464196 ΔE 0.045
- Twilight #4E518B ΔE 0.057
- Rebecca Purple #663399 ΔE 0.058
- Dusk #4E5481 ΔE 0.066
- Cobalt #1E488F ΔE 0.078
- Dusk Blue #26538D ΔE 0.082
- Dusty Grape #545775 ΔE 0.082
Use #543C7F 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.