#543780
Closest named color: Dark Slate Blue (#483D8B). oklch(40.8% 0.119 299.4), rgb(84, 55, 128).
Aa
White text reads best on this color (9.39:1).
About this color
#543780 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.119 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 0.030 away. White text reads best on it, at 9.39:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.23:1 |
| White text | 9.39:1 |
Values
| HEX | #543780 |
| RGB | rgb(84, 55, 128) |
| HSL | hsl(264, 40%, 36%) |
| OKLCH | oklch(40.8% 0.119 299.4) |
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 #543780 | 9.39:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #543780 | 2.23:1 | Fails | Lc 12.5 | Not readable |
| #543780 text on white | 9.39:1 | AAA | Lc 91.4 | Preferred for body text |
| #543780 text on black | 2.23:1 | Fails | Lc -10.9 | 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
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DCD4F0
oklch(88.5% 0.039 298.7)
-
Step 300
300
#C7B7E8
oklch(80.9% 0.07 299.8)
-
Step 400
400
#AB90DC
oklch(70.6% 0.112 299.9)
-
Step 500
500
#9773D3
oklch(63.1% 0.144 299.6)
-
Step 600
600
#825AC0
oklch(55.7% 0.155 299.4)
-
Step 700
700
#6E49A5
oklch(49.1% 0.144 299.7)
-
Step 800
800 (this color)
#543780
oklch(40.8% 0.119 299.4)
-
Step 900
900
#49346B
oklch(37.6% 0.093 299.5)
-
Step 950
950
#2B1F3F
oklch(27% 0.059 299.7)
#543780 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) | #194682 | 0.085 |
| Deuteranopia (no green cones) | #22467E | 0.079 |
| Tritanopia (no blue cones) | #4B4656 | 0.092 |
| Achromatopsia (no color) | #464646 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543780
#543780
oklch(40.8% 0.119 299.4)
- #445000
#445000
oklch(40.6% 0.096 119.1)
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 #543780, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.030
- Blueberry #464196 ΔE 0.047
- Rebecca Purple #663399 ΔE 0.053
- Twilight #4E518B ΔE 0.068
- Dusk #4E5481 ΔE 0.079
- Cobalt #1E488F ΔE 0.083
- Dusk Blue #26538D ΔE 0.091
- Indigo #4B0082 ΔE 0.091
Use #543780 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.