#543380
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.126 300.6), rgb(84, 51, 128).
Aa
White text reads best on this color (9.71:1).
About this color
#543380 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.126 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 9.71:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #543380 |
| RGB | rgb(84, 51, 128) |
| HSL | hsl(266, 43%, 35%) |
| OKLCH | oklch(40.1% 0.126 300.6) |
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 #543380 | 9.71:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #543380 | 2.16:1 | Fails | Lc 11.8 | Not readable |
| #543380 text on white | 9.71:1 | AAA | Lc 92.2 | Preferred for body text |
| #543380 text on black | 2.16:1 | Fails | Lc -10.2 | 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
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DED2F7
oklch(88.5% 0.052 300.1)
-
Step 300
300
#CAB3F5
oklch(80.9% 0.095 300.3)
-
Step 400
400
#B088EF
oklch(70.6% 0.151 300.5)
-
Step 500
500
#9E66EA
oklch(63.1% 0.193 300.5)
-
Step 600
600
#8A48D8
oklch(55.6% 0.21 300.7)
-
Step 700
700
#7538BB
oklch(49% 0.195 300.6)
-
Step 800
800
#5F3098
oklch(42.7% 0.162 300.3)
-
Step 900
900 (this color)
#543380
oklch(40.1% 0.126 300.6)
-
Step 950
950
#2D1B47
oklch(27% 0.08 300)
#543380 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) | #0D4483 | 0.095 |
| Deuteranopia (no green cones) | #1C447E | 0.087 |
| Tritanopia (no blue cones) | #4B4354 | 0.096 |
| Achromatopsia (no color) | #444444 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543380
#543380
oklch(40.1% 0.126 300.6)
- #414F00
#414F00
oklch(40.1% 0.096 120.6)
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 #543380, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.052
- Rebecca Purple #663399 ΔE 0.053
- Twilight #4E518B ΔE 0.078
- Indigo #4B0082 ΔE 0.082
- Cobalt #1E488F ΔE 0.088
- Dusk #4E5481 ΔE 0.088
- Chrysanthemum #560BAD ΔE 0.091
Use #543380 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.