#573078
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.121 306.7), rgb(87, 48, 120).
Aa
White text reads best on this color (10.00:1).
About this color
#573078 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.121 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.049 away. White text reads best on it, at 10.00:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #573078 |
| RGB | rgb(87, 48, 120) |
| HSL | hsl(273, 43%, 33%) |
| OKLCH | oklch(39.4% 0.121 306.7) |
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 #573078 | 10.00:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #573078 | 2.09:1 | Fails | Lc 11.1 | Not readable |
| #573078 text on white | 10.00:1 | AAA | Lc 92.9 | Preferred for body text |
| #573078 text on black | 2.09:1 | Fails | Lc -9.6 | 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
#F7F3FC
oklch(97% 0.013 306)
-
Step 100
100
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E2D1F4
oklch(88.5% 0.051 307.2)
-
Step 300
300
#D0B2EF
oklch(81% 0.09 306.9)
-
Step 400
400
#B886E7
oklch(70.6% 0.146 306.8)
-
Step 500
500
#A764E0
oklch(63.1% 0.187 306.8)
-
Step 600
600
#9247CD
oklch(55.6% 0.201 306.7)
-
Step 700
700
#7D37B2
oklch(49.2% 0.188 306.8)
-
Step 800
800
#652F90
oklch(42.7% 0.155 306.5)
-
Step 900
900 (this color)
#573078
oklch(39.4% 0.121 306.7)
-
Step 950
950
#301A43
oklch(26.9% 0.077 306.7)
#573078 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) | #14417A | 0.100 |
| Deuteranopia (no green cones) | #244376 | 0.089 |
| Tritanopia (no blue cones) | #523E4F | 0.088 |
| Achromatopsia (no color) | #424242 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573078
#573078
oklch(39.4% 0.121 306.7)
- #384F00
#384F00
oklch(39.4% 0.101 126.4)
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 #573078, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.049
- Rebecca Purple #663399 ΔE 0.061
- Blueberry #464196 ΔE 0.067
- Indigo #4B0082 ΔE 0.081
- Grape Purple #5D1451 ΔE 0.081
- Royal Purple #4B006E ΔE 0.085
- Twilight #4E518B ΔE 0.087
- Rich Purple #720058 ΔE 0.095
Use #573078 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.