#583A78
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.104 304.6), rgb(88, 58, 120).
Aa
White text reads best on this color (9.16:1).
About this color
#583A78 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.104 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.042 away. White text reads best on it, at 9.16:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #583A78 |
| RGB | rgb(88, 58, 120) |
| HSL | hsl(269, 35%, 35%) |
| OKLCH | oklch(41.2% 0.104 304.6) |
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 #583A78 | 9.16:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #583A78 | 2.29:1 | Fails | Lc 13.1 | Not readable |
| #583A78 text on white | 9.16:1 | AAA | Lc 90.9 | Preferred for body text |
| #583A78 text on black | 2.29:1 | Fails | Lc -11.4 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DED4EC
oklch(88.5% 0.034 304.5)
-
Step 300
300
#C9B7E1
oklch(80.8% 0.061 304.5)
-
Step 400
400
#AE91D2
oklch(70.7% 0.098 304.4)
-
Step 500
500
#9B75C6
oklch(63.2% 0.124 304.7)
-
Step 600
600
#865CB2
oklch(55.6% 0.135 305)
-
Step 700
700
#714B9A
oklch(49.1% 0.127 304.3)
-
Step 800
800 (this color)
#583A78
oklch(41.2% 0.104 304.6)
-
Step 900
900
#4B3564
oklch(37.6% 0.082 304.3)
-
Step 950
950
#2C203B
oklch(27.1% 0.051 303.6)
#583A78 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) | #28477A | 0.077 |
| Deuteranopia (no green cones) | #304876 | 0.071 |
| Tritanopia (no blue cones) | #534553 | 0.078 |
| Achromatopsia (no color) | #484848 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583A78
#583A78
oklch(41.2% 0.104 304.6)
- #3F5400
#3F5400
oklch(41.3% 0.103 124.5)
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 #583A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.058
- Rebecca Purple #663399 ΔE 0.063
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.071
- Dusty Grape #545775 ΔE 0.083
- Cobalt #1E488F ΔE 0.090
- Dusk Blue #26538D ΔE 0.092
Use #583A78 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.