#583A85
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.122 299.6), rgb(88, 58, 133).
Aa
White text reads best on this color (8.90:1).
About this color
#583A85 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.122 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 0.030 away. White text reads best on it, at 8.90:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #583A85 |
| RGB | rgb(88, 58, 133) |
| HSL | hsl(264, 39%, 37%) |
| OKLCH | oklch(42.1% 0.122 299.6) |
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 #583A85 | 8.90:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #583A85 | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #583A85 text on white | 8.90:1 | AAA | Lc 90.1 | Preferred for body text |
| #583A85 text on black | 2.35:1 | Fails | Lc -12.1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F0
oklch(88.6% 0.039 300.2)
-
Step 300
300
#C7B7E9
oklch(80.9% 0.071 299.4)
-
Step 400
400
#AB90DD
oklch(70.7% 0.113 299.6)
-
Step 500
500
#9772D4
oklch(63% 0.146 299.6)
-
Step 600
600
#8259C1
oklch(55.6% 0.158 299.4)
-
Step 700
700
#6E48A7
oklch(49.1% 0.148 299.4)
-
Step 800
800 (this color)
#583A85
oklch(42.1% 0.122 299.6)
-
Step 900
900
#4A346C
oklch(37.8% 0.095 300)
-
Step 950
950
#2B1F3F
oklch(27% 0.059 299.7)
#583A85 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) | #1C4A88 | 0.087 |
| Deuteranopia (no green cones) | #254983 | 0.080 |
| Tritanopia (no blue cones) | #4F4959 | 0.095 |
| Achromatopsia (no color) | #4A4A4A | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583A85
#583A85
oklch(42.1% 0.122 299.6)
- #475400
#475400
oklch(42% 0.099 119.5)
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 #583A85, 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
- Blueberry #464196 ΔE 0.043
- Rebecca Purple #663399 ΔE 0.044
- Twilight #4E518B ΔE 0.061
- Dusk #4E5481 ΔE 0.073
- Cobalt #1E488F ΔE 0.084
- Dusk Blue #26538D ΔE 0.089
- Dusty Grape #545775 ΔE 0.090
Use #583A85 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.