#543E9B
Closest named color: Blueberry (#464196). oklch(43.9% 0.145 290), rgb(84, 62, 155).
Aa
White text reads best on this color (8.26:1).
About this color
#543E9B is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.145 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.025 away. White text reads best on it, at 8.26:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.53:1 |
| White text | 8.26:1 |
Values
| HEX | #543E9B |
| RGB | rgb(84, 62, 155) |
| HSL | hsl(254, 43%, 43%) |
| OKLCH | oklch(43.9% 0.145 290) |
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 #543E9B | 8.26:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #543E9B | 2.53:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #543E9B text on white | 8.26:1 | AAA | Lc 88.2 | Fine for body text |
| #543E9B text on black | 2.53:1 | Fails | Lc -13.9 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D5F7
oklch(88.6% 0.047 289.5)
-
Step 300
300
#BFB8F4
oklch(80.9% 0.084 289.7)
-
Step 400
400
#A091EF
oklch(70.8% 0.135 289.8)
-
Step 500
500
#8A72E9
oklch(63.1% 0.173 289.8)
-
Step 600
600
#7657D7
oklch(55.6% 0.188 290.1)
-
Step 700
700
#6346BB
oklch(49.1% 0.175 289.8)
-
Step 800
800 (this color)
#543E9B
oklch(43.9% 0.145 290)
-
Step 900
900
#423378
oklch(37.6% 0.113 289.9)
-
Step 950
950
#271F46
oklch(27.1% 0.07 290.3)
#543E9B 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) | #00509E | 0.087 |
| Deuteranopia (no green cones) | #004C99 | 0.087 |
| Tritanopia (no blue cones) | #3F5366 | 0.119 |
| Achromatopsia (no color) | #4E4E4E | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543E9B
#543E9B
oklch(43.9% 0.145 290)
- #565600
#565600
oklch(43.9% 0.096 109.8)
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 #543E9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.033
- Rebecca Purple #663399 ΔE 0.039
- Twilight #4E518B ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Bluey Purple #6241C7 ΔE 0.074
- Cobalt #1E488F ΔE 0.076
- Dusk #4E5481 ΔE 0.078
Use #543E9B 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.