#581C55
Closest named color: Grape Purple (#5D1451). oklch(34.4% 0.116 329.8), rgb(88, 28, 85).
Aa
White text reads best on this color (12.26:1).
About this color
#581C55 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.116 and its hue 330°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.017 away. White text reads best on it, at 12.26:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.71:1 |
| White text | 12.26:1 |
Values
| HEX | #581C55 |
| RGB | rgb(88, 28, 85) |
| HSL | hsl(303, 52%, 23%) |
| OKLCH | oklch(34.4% 0.116 329.8) |
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 #581C55 | 12.26:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #581C55 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #581C55 text on white | 12.26:1 | AAA | Lc 97.3 | Preferred for body text |
| #581C55 text on black | 1.71:1 | Fails | Lc 0.0 | 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
#FAF3F9
oklch(97.1% 0.011 330.1)
-
Step 100
100
#F4E4F2
oklch(93.6% 0.025 329.7)
-
Step 200
200
#ECCEE9
oklch(88.5% 0.049 329.2)
-
Step 300
300
#E1ADDC
oklch(81% 0.086 329.6)
-
Step 400
400
#D07FCA
oklch(70.7% 0.139 329.6)
-
Step 500
500
#C25ABC
oklch(63% 0.178 329.7)
-
Step 600
600
#AD3CA8
oklch(55.6% 0.193 329.6)
-
Step 700
700
#952D90
oklch(49.2% 0.179 329.9)
-
Step 800
800
#792775
oklch(42.8% 0.149 329.8)
-
Step 900
900 (this color)
#581C55
oklch(34.4% 0.116 329.8)
-
Step 950
950
#391737
oklch(26.9% 0.073 329.6)
#581C55 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) | #173057 | 0.120 |
| Deuteranopia (no green cones) | #2C3853 | 0.104 |
| Tritanopia (no blue cones) | #5B2335 | 0.064 |
| Achromatopsia (no color) | #353535 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #581C55
#581C55
oklch(34.4% 0.116 329.8)
- #00461B
#00461B
oklch(34.4% 0.096 149.6)
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 #581C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.017
- Plum Purple #4E0550 ΔE 0.045
- Deep Violet #490648 ΔE 0.056
- Rich Purple #720058 ΔE 0.059
- Velvet #750851 ΔE 0.063
- Royal Purple #4B006E ΔE 0.071
- Eggplant Purple #430541 ΔE 0.072
- Merlot #730039 ΔE 0.077
Use #581C55 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.