#543371
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.106 306.7), rgb(84, 51, 113).
Aa
White text reads best on this color (10.05:1).
About this color
#543371 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.106 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 10.05:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #543371 |
| RGB | rgb(84, 51, 113) |
| HSL | hsl(272, 38%, 32%) |
| OKLCH | oklch(39.1% 0.106 306.7) |
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 #543371 | 10.05:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #543371 | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #543371 text on white | 10.05:1 | AAA | Lc 93.1 | Preferred for body text |
| #543371 text on black | 2.08:1 | Fails | Lc -9.4 | 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 900.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E0D2F1
oklch(88.5% 0.045 305.9)
-
Step 300
300
#CEB4E9
oklch(81% 0.078 307)
-
Step 400
400
#B58ADF
oklch(70.6% 0.128 306.6)
-
Step 500
500
#A36BD5
oklch(63.1% 0.162 306.7)
-
Step 600
600
#8E50C3
oklch(55.7% 0.177 306.4)
-
Step 700
700
#793FA8
oklch(49% 0.165 306.7)
-
Step 800
800
#623588
oklch(42.6% 0.136 306.5)
-
Step 900
900 (this color)
#543371
oklch(39.1% 0.106 306.7)
-
Step 950
950
#2F1C40
oklch(27% 0.068 306.8)
#543371 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) | #204173 | 0.083 |
| Deuteranopia (no green cones) | #2A426F | 0.075 |
| Tritanopia (no blue cones) | #503E4D | 0.076 |
| Achromatopsia (no color) | #424242 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543371
#543371
oklch(39.1% 0.106 306.7)
- #374E00
#374E00
oklch(39% 0.1 126.5)
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 #543371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.074
- Grape Purple #5D1451 ΔE 0.079
- Twilight #4E518B ΔE 0.084
- Dusk #4E5481 ΔE 0.089
- Indigo #4B0082 ΔE 0.090
- Royal Purple #4B006E ΔE 0.091
Use #543371 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.