#581B70
Closest named color: Royal Purple (#4B006E). oklch(36.1% 0.144 314.5), rgb(88, 27, 112).
Aa
White text reads best on this color (11.62:1).
About this color
#581B70 is a dark, vivid purple. In OKLCH its lightness is 36%, its chroma 0.144 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.047 away. White text reads best on it, at 11.62:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.80:1 |
| White text | 11.62:1 |
Values
| HEX | #581B70 |
| RGB | rgb(88, 27, 112) |
| HSL | hsl(283, 61%, 27%) |
| OKLCH | oklch(36.1% 0.144 314.5) |
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 #581B70 | 11.62:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #581B70 | 1.80:1 | Fails | Lc 8.0 | Not readable |
| #581B70 text on white | 11.62:1 | AAA | Lc 95.9 | Preferred for body text |
| #581B70 text on black | 1.80:1 | 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
#F9F3FC
oklch(97.1% 0.013 314.8)
-
Step 100
100
#F2E4F9
oklch(93.6% 0.032 314.7)
-
Step 200
200
#E8CEF5
oklch(88.5% 0.06 314.5)
-
Step 300
300
#DBACF1
oklch(81% 0.107 314.8)
-
Step 400
400
#C87BEA
oklch(70.7% 0.173 314.7)
-
Step 500
500
#B953E3
oklch(63.1% 0.22 314.6)
-
Step 600
600
#A42DD1
oklch(55.5% 0.24 314.4)
-
Step 700
700
#8D1CB5
oklch(49.1% 0.223 314.6)
-
Step 800
800
#721C92
oklch(42.6% 0.184 314.5)
-
Step 900
900 (this color)
#581B70
oklch(36.1% 0.144 314.5)
-
Step 950
950
#361544
oklch(27% 0.09 314.5)
#581B70 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) | #003572 | 0.131 |
| Deuteranopia (no green cones) | #173A6E | 0.121 |
| Tritanopia (no blue cones) | #562D44 | 0.093 |
| Achromatopsia (no color) | #393939 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #581B70
#581B70
oklch(36.1% 0.144 314.5)
- #234800
#234800
oklch(36% 0.104 134.5)
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 #581B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.047
- Indigo #4B0082 ΔE 0.055
- Grape Purple #5D1451 ΔE 0.056
- Plum Purple #4E0550 ΔE 0.067
- Rich Purple #720058 ΔE 0.073
- Deep Violet #490648 ΔE 0.082
- Velvet #750851 ΔE 0.085
- Rebecca Purple #663399 ΔE 0.086
Use #581B70 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.