#583574
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.108 307.9), rgb(88, 53, 116).
Aa
White text reads best on this color (9.64:1).
About this color
#583574 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.108 and its hue 308°. 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 9.64:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.64:1 |
Values
| HEX | #583574 |
| RGB | rgb(88, 53, 116) |
| HSL | hsl(273, 37%, 33%) |
| OKLCH | oklch(40.1% 0.108 307.9) |
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 #583574 | 9.64:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #583574 | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #583574 text on white | 9.64:1 | AAA | Lc 92.1 | Preferred for body text |
| #583574 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E1D2F1
oklch(88.5% 0.045 307.2)
-
Step 300
300
#CFB3E9
oklch(80.9% 0.08 308.2)
-
Step 400
400
#B789DF
oklch(70.7% 0.131 307.9)
-
Step 500
500
#A569D5
oklch(63% 0.166 308)
-
Step 600
600
#904EC2
oklch(55.5% 0.179 307.8)
-
Step 700
700
#7B3EA8
oklch(49.1% 0.167 307.9)
-
Step 800
800
#643488
oklch(42.7% 0.138 307.9)
-
Step 900
900 (this color)
#583574
oklch(40.1% 0.108 307.9)
-
Step 950
950
#301C40
oklch(27.1% 0.068 308.1)
#583574 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) | #234376 | 0.085 |
| Deuteranopia (no green cones) | #2D4572 | 0.078 |
| Tritanopia (no blue cones) | #54404F | 0.077 |
| Achromatopsia (no color) | #454545 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583574
#583574
oklch(40.1% 0.108 307.9)
- #375200
#375200
oklch(40.2% 0.105 128.2)
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 #583574, 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 0.066
- Blueberry #464196 ΔE 0.067
- Twilight #4E518B ΔE 0.078
- Dusk #4E5481 ΔE 0.083
- Grape Purple #5D1451 ΔE 0.084
- Dusty Grape #545775 ΔE 0.095
- Indigo #4B0082 ΔE 0.096
Use #583574 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.