#542B91
Closest named color: Rebecca Purple (#663399). oklch(40.2% 0.159 297.1), rgb(84, 43, 145).
Aa
White text reads best on this color (9.85:1).
About this color
#542B91 is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.159 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 0.042 away. White text reads best on it, at 9.85:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #542B91 |
| RGB | rgb(84, 43, 145) |
| HSL | hsl(264, 54%, 37%) |
| OKLCH | oklch(40.2% 0.159 297.1) |
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 #542B91 | 9.85:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #542B91 | 2.13:1 | Fails | Lc 11.7 | Not readable |
| #542B91 text on white | 9.85:1 | AAA | Lc 92.2 | Preferred for body text |
| #542B91 text on black | 2.13:1 | Fails | Lc -10.2 | 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
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE6FF
oklch(93.7% 0.034 296.7)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C8B2FF
oklch(81% 0.109 297)
-
Step 400
400
#AE85FF
oklch(70.8% 0.175 297.2)
-
Step 500
500
#9C5EFF
oklch(63.1% 0.228 297.1)
-
Step 600
600
#8A31F6
oklch(55.6% 0.264 297.1)
-
Step 700
700
#761FD6
oklch(49.1% 0.245 297.3)
-
Step 800
800
#5F1FAD
oklch(42.6% 0.203 296.9)
-
Step 900
900 (this color)
#542B91
oklch(40.2% 0.159 297.1)
-
Step 950
950
#2D1650
oklch(26.9% 0.101 297.3)
#542B91 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) | #004494 | 0.104 |
| Deuteranopia (no green cones) | #00428F | 0.104 |
| Tritanopia (no blue cones) | #45445A | 0.123 |
| Achromatopsia (no color) | #434343 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #542B91
#542B91
oklch(40.2% 0.159 297.1)
- #454E00
#454E00
oklch(40.2% 0.093 117.1)
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 #542B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.045
- Blueberry #464196 ΔE 0.053
- Chrysanthemum #560BAD ΔE 0.057
- Imperial Purple #480CA8 ΔE 0.061
- Indigo #4B0082 ΔE 0.068
- Indigo Blue #3A18B1 ΔE 0.080
- Grape #7209B7 ΔE 0.086
Use #542B91 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.