#543B73
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.095 303), rgb(84, 59, 115).
Aa
White text reads best on this color (9.33:1).
About this color
#543B73 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.095 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 0.045 away. White text reads best on it, at 9.33:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.25:1 |
| White text | 9.33:1 |
Values
| HEX | #543B73 |
| RGB | rgb(84, 59, 115) |
| HSL | hsl(267, 32%, 34%) |
| OKLCH | oklch(40.6% 0.095 303) |
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 #543B73 | 9.33:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #543B73 | 2.25:1 | Fails | Lc 12.6 | Not readable |
| #543B73 text on white | 9.33:1 | AAA | Lc 91.4 | Preferred for body text |
| #543B73 text on black | 2.25:1 | Fails | Lc -11.0 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DDD5EA
oklch(88.6% 0.03 303)
-
Step 300
300
#C7B9DF
oklch(81% 0.055 302)
-
Step 400
400
#AC93CE
oklch(70.7% 0.089 303.6)
-
Step 500
500
#9778C2
oklch(63.1% 0.113 302.6)
-
Step 600
600
#825FAE
oklch(55.5% 0.124 303)
-
Step 700
700
#6E4E95
oklch(49% 0.114 303.2)
-
Step 800
800 (this color)
#543B73
oklch(40.6% 0.095 303)
-
Step 900
900
#4A3762
oklch(37.7% 0.075 303.4)
-
Step 950
950
#2B2139
oklch(27.1% 0.045 302.6)
#543B73 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) | #2B4675 | 0.066 |
| Deuteranopia (no green cones) | #314772 | 0.062 |
| Tritanopia (no blue cones) | #4F4551 | 0.072 |
| Achromatopsia (no color) | #474747 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543B73
#543B73
oklch(40.6% 0.095 303)
- #405109
#405109
oklch(40.6% 0.094 122.9)
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 #543B73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Blueberry #464196 ΔE 0.062
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.074
- Dusty Grape #545775 ΔE 0.080
- Cobalt #1E488F ΔE 0.086
- Dark Grey Blue #29465B ΔE 0.087
Use #543B73 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.