#573891
Closest named color: Dark Slate Blue (#483D8B). oklch(42.5% 0.141 295.9), rgb(87, 56, 145).
Aa
White text reads best on this color (8.82:1).
About this color
#573891 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.141 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 0.030 away. White text reads best on it, at 8.82:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.37:1 |
| White text | 8.82:1 |
Values
| HEX | #573891 |
| RGB | rgb(87, 56, 145) |
| HSL | hsl(261, 44%, 39%) |
| OKLCH | oklch(42.5% 0.141 295.9) |
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 #573891 | 8.82:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #573891 | 2.37:1 | Fails | Lc 14.2 | Not readable |
| #573891 text on white | 8.82:1 | AAA | Lc 89.8 | Fine for body text |
| #573891 text on black | 2.37:1 | Fails | Lc -12.4 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DBD4F5
oklch(88.6% 0.046 295.2)
-
Step 300
300
#C5B6F0
oklch(80.9% 0.082 296.4)
-
Step 400
400
#A88EE9
oklch(70.6% 0.132 296)
-
Step 500
500
#946FE2
oklch(63% 0.169 296.1)
-
Step 600
600
#7F54D0
oklch(55.5% 0.183 295.8)
-
Step 700
700
#6C44B4
oklch(49.2% 0.17 296)
-
Step 800
800 (this color)
#573891
oklch(42.5% 0.141 295.9)
-
Step 900
900
#483274
oklch(37.7% 0.109 296.1)
-
Step 950
950
#2A1E44
oklch(27% 0.069 296)
#573891 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) | #004B94 | 0.098 |
| Deuteranopia (no green cones) | #0E498F | 0.093 |
| Tritanopia (no blue cones) | #494B5F | 0.109 |
| Achromatopsia (no color) | #4A4A4A | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573891
#573891
oklch(42.5% 0.141 295.9)
- #4C5400
#4C5400
oklch(42.4% 0.097 115.9)
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 #573891, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.030
- Rebecca Purple #663399 ΔE 0.032
- Blueberry #464196 ΔE 0.035
- Twilight #4E518B ΔE 0.067
- Chrysanthemum #560BAD ΔE 0.078
- Dusk #4E5481 ΔE 0.083
- Cobalt #1E488F ΔE 0.084
- Imperial Purple #480CA8 ΔE 0.084
Use #573891 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.