#542D91
Closest named color: Rebecca Purple (#663399). oklch(40.5% 0.156 296.7), rgb(84, 45, 145).
Aa
White text reads best on this color (9.71:1).
About this color
#542D91 is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.156 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.040 away. White text reads best on it, at 9.71:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #542D91 |
| RGB | rgb(84, 45, 145) |
| HSL | hsl(263, 53%, 37%) |
| OKLCH | oklch(40.5% 0.156 296.7) |
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 #542D91 | 9.71:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #542D91 | 2.16:1 | Fails | Lc 12.0 | Not readable |
| #542D91 text on white | 9.71:1 | AAA | Lc 91.9 | Preferred for body text |
| #542D91 text on black | 2.16:1 | Fails | Lc -10.4 | 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
#C6B5F5
oklch(81% 0.091 296.5)
-
Step 400
400
#AA8BF0
oklch(70.6% 0.146 296.6)
-
Step 500
500
#976AEB
oklch(63.1% 0.188 296.8)
-
Step 600
600
#834ED9
oklch(55.7% 0.203 296.8)
-
Step 700
700
#6F3DBC
oklch(49.1% 0.189 296.9)
-
Step 800
800 (this color)
#542D91
oklch(40.5% 0.156 296.7)
-
Step 900
900
#492F79
oklch(37.7% 0.121 296.3)
-
Step 950
950
#2B1C47
oklch(27% 0.078 297)
#542D91 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) | #004594 | 0.102 |
| Deuteranopia (no green cones) | #00438F | 0.102 |
| Tritanopia (no blue cones) | #45455B | 0.120 |
| Achromatopsia (no color) | #444444 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #542D91
#542D91
oklch(40.5% 0.156 296.7)
- #464F00
#464F00
oklch(40.5% 0.093 117)
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 #542D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.049
- Chrysanthemum #560BAD ΔE 0.060
- Imperial Purple #480CA8 ΔE 0.064
- Indigo #4B0082 ΔE 0.071
- Indigo Blue #3A18B1 ΔE 0.082
- Grape #7209B7 ΔE 0.087
Use #542D91 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.