#542F91
Closest named color: Dark Slate Blue (#483D8B). oklch(40.8% 0.153 296.3), rgb(84, 47, 145).
Aa
White text reads best on this color (9.57:1).
About this color
#542F91 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.153 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 9.57:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #542F91 |
| RGB | rgb(84, 47, 145) |
| HSL | hsl(263, 51%, 38%) |
| OKLCH | oklch(40.8% 0.153 296.3) |
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 #542F91 | 9.57:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #542F91 | 2.19:1 | Fails | Lc 12.3 | Not readable |
| #542F91 text on white | 9.57:1 | AAA | Lc 91.6 | Preferred for body text |
| #542F91 text on black | 2.19:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7FA
oklch(93.7% 0.026 295.5)
-
Step 200
200
#DCD3F7
oklch(88.5% 0.05 296.8)
-
Step 300
300
#C6B5F4
oklch(80.9% 0.089 296.7)
-
Step 400
400
#A98CEF
oklch(70.7% 0.143 296)
-
Step 500
500
#966CE9
oklch(63.2% 0.182 296.3)
-
Step 600
600
#814FD8
oklch(55.6% 0.2 296)
-
Step 700
700
#6E3FBB
oklch(49.2% 0.185 296.3)
-
Step 800
800 (this color)
#542F91
oklch(40.8% 0.153 296.3)
-
Step 900
900
#493078
oklch(37.8% 0.118 296.3)
-
Step 950
950
#2A1D46
oklch(27% 0.074 295.6)
#542F91 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) | #004694 | 0.101 |
| Deuteranopia (no green cones) | #00448F | 0.101 |
| Tritanopia (no blue cones) | #44465C | 0.118 |
| Achromatopsia (no color) | #454545 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #542F91
#542F91
oklch(40.8% 0.153 296.3)
- #474F00
#474F00
oklch(40.6% 0.093 116.2)
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 #542F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Rebecca Purple #663399 ΔE 0.039
- Blueberry #464196 ΔE 0.046
- Chrysanthemum #560BAD ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.066
- Indigo #4B0082 ΔE 0.075
- Indigo Blue #3A18B1 ΔE 0.083
- Twilight #4E518B ΔE 0.086
Use #542F91 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.