#543E71
Closest named color: Dark Slate Blue (#483D8B). oklch(41.1% 0.086 302.7), rgb(84, 62, 113).
Aa
White text reads best on this color (9.11:1).
About this color
#543E71 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.086 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.049 away. White text reads best on it, at 9.11:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.086) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.30:1 |
| White text | 9.11:1 |
Values
| HEX | #543E71 |
| RGB | rgb(84, 62, 113) |
| HSL | hsl(266, 29%, 34%) |
| OKLCH | oklch(41.1% 0.086 302.7) |
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 #543E71 | 9.11:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #543E71 | 2.30:1 | Fails | Lc 13.1 | Not readable |
| #543E71 text on white | 9.11:1 | AAA | Lc 90.9 | Preferred for body text |
| #543E71 text on black | 2.30:1 | Fails | Lc -11.5 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F2
oklch(93.7% 0.014 304.1)
-
Step 200
200
#DCD5E9
oklch(88.5% 0.028 301.7)
-
Step 300
300
#C7B9DC
oklch(80.9% 0.051 303.4)
-
Step 400
400
#AA95CB
oklch(70.8% 0.081 302.2)
-
Step 500
500
#967ABD
oklch(63.2% 0.103 302.8)
-
Step 600
600
#8062A9
oklch(55.6% 0.111 302.4)
-
Step 700
700
#6D5191
oklch(49.2% 0.103 303)
-
Step 800
800 (this color)
#543E71
oklch(41.1% 0.086 302.7)
-
Step 900
900
#49385F
oklch(37.7% 0.068 303.4)
-
Step 950
950
#2A2138
oklch(26.9% 0.043 301.5)
#543E71 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) | #314873 | 0.058 |
| Deuteranopia (no green cones) | #364870 | 0.053 |
| Tritanopia (no blue cones) | #4F4752 | 0.066 |
| Achromatopsia (no color) | #484848 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543E71
#543E71
oklch(41.1% 0.086 302.7)
- #425215
#425215
oklch(41.1% 0.087 123)
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 #543E71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.049
- Twilight #4E518B ΔE 0.061
- Dusk #4E5481 ΔE 0.062
- Blueberry #464196 ΔE 0.065
- Dusty Grape #545775 ΔE 0.071
- Rebecca Purple #663399 ΔE 0.080
- Dark Grey Blue #29465B ΔE 0.082
- YInMn Blue #415A77 ΔE 0.082
Use #543E71 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.