#542D78
Closest named color: Dark Slate Blue (#483D8B). oklch(38.6% 0.125 305.2), rgb(84, 45, 120).
Aa
White text reads best on this color (10.37:1).
About this color
#542D78 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.125 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 10.37:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.02:1 |
| White text | 10.37:1 |
Values
| HEX | #542D78 |
| RGB | rgb(84, 45, 120) |
| HSL | hsl(271, 45%, 32%) |
| OKLCH | oklch(38.6% 0.125 305.2) |
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 #542D78 | 10.37:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #542D78 | 2.02:1 | Fails | Lc 10.2 | Not readable |
| #542D78 text on white | 10.37:1 | AAA | Lc 93.7 | Preferred for body text |
| #542D78 text on black | 2.02:1 | Fails | Lc -8.8 | 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
#F7F3FC
oklch(97% 0.013 306)
-
Step 100
100
#EEE6F9
oklch(93.7% 0.027 304.8)
-
Step 200
200
#E1D1F5
oklch(88.5% 0.052 305.4)
-
Step 300
300
#CFB1F2
oklch(80.9% 0.095 305.4)
-
Step 400
400
#B786EB
oklch(70.7% 0.151 305.2)
-
Step 500
500
#A563E4
oklch(63% 0.192 305.1)
-
Step 600
600
#9145D2
oklch(55.6% 0.209 305.3)
-
Step 700
700
#7C35B6
oklch(49.1% 0.195 305.4)
-
Step 800
800
#642E93
oklch(42.7% 0.16 305)
-
Step 900
900 (this color)
#542D78
oklch(38.6% 0.125 305.2)
-
Step 950
950
#301A45
oklch(27.1% 0.079 305.3)
#542D78 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) | #093F7A | 0.103 |
| Deuteranopia (no green cones) | #1D4076 | 0.092 |
| Tritanopia (no blue cones) | #4E3C4E | 0.091 |
| Achromatopsia (no color) | #404040 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #542D78
#542D78
oklch(38.6% 0.125 305.2)
- #384C00
#384C00
oklch(38.5% 0.097 125)
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 #542D78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Rebecca Purple #663399 ΔE 0.065
- Blueberry #464196 ΔE 0.069
- Indigo #4B0082 ΔE 0.072
- Royal Purple #4B006E ΔE 0.076
- Grape Purple #5D1451 ΔE 0.079
- Twilight #4E518B ΔE 0.094
- Rich Purple #720058 ΔE 0.096
Use #542D78 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.