#573091
Closest named color: Rebecca Purple (#663399). oklch(41.2% 0.152 297.8), rgb(87, 48, 145).
Aa
White text reads best on this color (9.38:1).
About this color
#573091 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.152 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.033 away. White text reads best on it, at 9.38:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.23:1 |
| White text | 9.38:1 |
Values
| HEX | #573091 |
| RGB | rgb(87, 48, 145) |
| HSL | hsl(264, 50%, 38%) |
| OKLCH | oklch(41.2% 0.152 297.8) |
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 #573091 | 9.38:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #573091 | 2.23:1 | Fails | Lc 12.8 | Not readable |
| #573091 text on white | 9.38:1 | AAA | Lc 91.2 | Preferred for body text |
| #573091 text on black | 2.23:1 | Fails | Lc -11.2 | 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 800.
-
Step 50
50
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DCD3F6
oklch(88.5% 0.049 297.2)
-
Step 300
300
#C7B5F3
oklch(81% 0.088 297.7)
-
Step 400
400
#AC8BED
oklch(70.7% 0.143 298.2)
-
Step 500
500
#986BE7
oklch(63.1% 0.181 297.7)
-
Step 600
600
#844FD5
oklch(55.6% 0.197 297.9)
-
Step 700
700
#703EB9
oklch(49.1% 0.184 297.9)
-
Step 800
800 (this color)
#573091
oklch(41.2% 0.152 297.8)
-
Step 900
900
#4A2F77
oklch(37.6% 0.119 297.7)
-
Step 950
950
#2B1C46
oklch(26.9% 0.076 297.5)
#573091 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) | #004794 | 0.105 |
| Deuteranopia (no green cones) | #00458F | 0.105 |
| Tritanopia (no blue cones) | #49465C | 0.116 |
| Achromatopsia (no color) | #464646 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573091
#573091
oklch(41.2% 0.152 297.8)
- #475100
#475100
oklch(41.2% 0.095 117.6)
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 #573091, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.033
- Dark Slate Blue #483D8B ΔE 0.039
- Blueberry #464196 ΔE 0.047
- Chrysanthemum #560BAD ΔE 0.065
- Imperial Purple #480CA8 ΔE 0.071
- Indigo #4B0082 ΔE 0.079
- Twilight #4E518B ΔE 0.084
- Grape #7209B7 ΔE 0.086
Use #573091 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.