#543399
Closest named color: Rebecca Purple (#663399). oklch(42% 0.158 293.3), rgb(84, 51, 153).
Aa
White text reads best on this color (9.08:1).
About this color
#543399 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.158 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.035 away. White text reads best on it, at 9.08:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.08:1 |
Values
| HEX | #543399 |
| RGB | rgb(84, 51, 153) |
| HSL | hsl(259, 50%, 40%) |
| OKLCH | oklch(42% 0.158 293.3) |
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 #543399 | 9.08:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #543399 | 2.31:1 | Fails | Lc 13.6 | Not readable |
| #543399 text on white | 9.08:1 | AAA | Lc 90.4 | Preferred for body text |
| #543399 text on black | 2.31:1 | Fails | Lc -11.9 | 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
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DAD3F9
oklch(88.4% 0.052 293.7)
-
Step 300
300
#C3B6F7
oklch(81% 0.092 293.4)
-
Step 400
400
#A58DF3
oklch(70.7% 0.147 293.1)
-
Step 500
500
#916CEF
oklch(63.1% 0.189 293.2)
-
Step 600
600
#7D50DD
oklch(55.7% 0.204 293.3)
-
Step 700
700
#6A3FC0
oklch(49.1% 0.191 293.4)
-
Step 800
800 (this color)
#543399
oklch(42% 0.158 293.3)
-
Step 900
900
#46307B
oklch(37.7% 0.122 293.2)
-
Step 950
950
#291D48
oklch(27% 0.077 293.4)
#543399 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) | #004A9C | 0.096 |
| Deuteranopia (no green cones) | #004797 | 0.096 |
| Tritanopia (no blue cones) | #404B61 | 0.125 |
| Achromatopsia (no color) | #484848 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543399
#543399
oklch(42% 0.158 293.3)
- #4E5200
#4E5200
oklch(42.1% 0.094 113)
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 #543399, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.035
- Dark Slate Blue #483D8B ΔE 0.038
- Blueberry #464196 ΔE 0.038
- Chrysanthemum #560BAD ΔE 0.060
- Imperial Purple #480CA8 ΔE 0.066
- Blue With A Hint Of Purple #533CC6 ΔE 0.075
- Indigo Blue #3A18B1 ΔE 0.079
- Twilight #4E518B ΔE 0.081
Use #543399 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.