#573389
Closest named color: Dark Slate Blue (#483D8B). oklch(41.1% 0.138 299.6), rgb(87, 51, 137).
Aa
White text reads best on this color (9.37:1).
About this color
#573389 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.138 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 9.37:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.24:1 |
| White text | 9.37:1 |
Values
| HEX | #573389 |
| RGB | rgb(87, 51, 137) |
| HSL | hsl(265, 46%, 37%) |
| OKLCH | oklch(41.1% 0.138 299.6) |
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 #573389 | 9.37:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #573389 | 2.24:1 | Fails | Lc 12.7 | Not readable |
| #573389 text on white | 9.37:1 | AAA | Lc 91.3 | Preferred for body text |
| #573389 text on black | 2.24:1 | Fails | Lc -11.1 | 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
#ECE7F8
oklch(93.7% 0.023 299.4)
-
Step 200
200
#DDD3F3
oklch(88.5% 0.045 299.7)
-
Step 300
300
#C8B5EE
oklch(80.8% 0.082 299.8)
-
Step 400
400
#AD8DE5
oklch(70.7% 0.129 299.9)
-
Step 500
500
#996EDD
oklch(63% 0.165 299.6)
-
Step 600
600
#8553CB
oklch(55.6% 0.18 299.8)
-
Step 700
700
#7043AF
oklch(49.1% 0.166 299.4)
-
Step 800
800 (this color)
#573389
oklch(41.1% 0.138 299.6)
-
Step 900
900
#4B3171
oklch(37.7% 0.107 300)
-
Step 950
950
#2C1D42
oklch(26.9% 0.068 300.6)
#573389 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) | #00468C | 0.103 |
| Deuteranopia (no green cones) | #134687 | 0.097 |
| Tritanopia (no blue cones) | #4C4559 | 0.104 |
| Achromatopsia (no color) | #464646 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573389
#573389
oklch(41.1% 0.138 299.6)
- #455100
#455100
oklch(41% 0.096 119)
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 #573389, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Rebecca Purple #663399 ΔE 0.038
- Blueberry #464196 ΔE 0.046
- Twilight #4E518B ΔE 0.077
- Chrysanthemum #560BAD ΔE 0.079
- Indigo #4B0082 ΔE 0.083
- Imperial Purple #480CA8 ΔE 0.084
- Cobalt #1E488F ΔE 0.090
Use #573389 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.