#543387
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.135 298.3), rgb(84, 51, 135).
Aa
White text reads best on this color (9.54:1).
About this color
#543387 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.135 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.031 away. White text reads best on it, at 9.54:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.54:1 |
Values
| HEX | #543387 |
| RGB | rgb(84, 51, 135) |
| HSL | hsl(264, 45%, 36%) |
| OKLCH | oklch(40.6% 0.135 298.3) |
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 #543387 | 9.54:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #543387 | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #543387 text on white | 9.54:1 | AAA | Lc 91.7 | Preferred for body text |
| #543387 text on black | 2.20:1 | Fails | Lc -10.7 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F3
oklch(88.4% 0.045 298.3)
-
Step 300
300
#C7B6ED
oklch(80.9% 0.078 298.8)
-
Step 400
400
#AB8EE5
oklch(70.7% 0.127 298.4)
-
Step 500
500
#9770DD
oklch(63.2% 0.161 298.2)
-
Step 600
600
#8255CA
oklch(55.6% 0.175 298.2)
-
Step 700
700
#6E45AF
oklch(49.2% 0.162 298)
-
Step 800
800 (this color)
#543387
oklch(40.6% 0.135 298.3)
-
Step 900
900
#493271
oklch(37.6% 0.105 298)
-
Step 950
950
#2B1E42
oklch(27% 0.066 298.6)
#543387 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) | #00458A | 0.098 |
| Deuteranopia (no green cones) | #114485 | 0.092 |
| Tritanopia (no blue cones) | #484558 | 0.103 |
| Achromatopsia (no color) | #454545 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #543387
#543387
oklch(40.6% 0.135 298.3)
- #455000
#455000
oklch(40.7% 0.095 118.4)
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 #543387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Rebecca Purple #663399 ΔE 0.045
- Blueberry #464196 ΔE 0.045
- Twilight #4E518B ΔE 0.077
- Indigo #4B0082 ΔE 0.081
- Chrysanthemum #560BAD ΔE 0.081
- Imperial Purple #480CA8 ΔE 0.084
- Cobalt #1E488F ΔE 0.086
Use #543387 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.