#583CA1
Closest named color: Rebecca Purple (#663399). oklch(44.4% 0.156 291.5), rgb(88, 60, 161).
Aa
White text reads best on this color (8.15:1).
About this color
#583CA1 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.156 and its hue 292°. 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 8.15:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #583CA1 |
| RGB | rgb(88, 60, 161) |
| HSL | hsl(257, 46%, 43%) |
| OKLCH | oklch(44.4% 0.156 291.5) |
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 #583CA1 | 8.15:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #583CA1 | 2.57:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #583CA1 text on white | 8.15:1 | AAA | Lc 87.8 | Fine for body text |
| #583CA1 text on black | 2.57:1 | Fails | Lc -14.4 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#D9D4F9
oklch(88.6% 0.051 291.5)
-
Step 300
300
#C1B6F7
oklch(80.8% 0.091 292)
-
Step 400
400
#A38EF3
oklch(70.7% 0.145 291.8)
-
Step 500
500
#8E6EEF
oklch(63.1% 0.186 291.6)
-
Step 600
600
#7952DD
oklch(55.6% 0.202 291.3)
-
Step 700
700
#6741C0
oklch(49.1% 0.188 291.7)
-
Step 800
800 (this color)
#583CA1
oklch(44.4% 0.156 291.5)
-
Step 900
900
#44317C
oklch(37.7% 0.122 291.1)
-
Step 950
950
#281D48
oklch(26.9% 0.077 292.2)
#583CA1 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) | #0051A4 | 0.094 |
| Deuteranopia (no green cones) | #004D9F | 0.094 |
| Tritanopia (no blue cones) | #435369 | 0.124 |
| Achromatopsia (no color) | #4F4F4F | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583CA1
#583CA1
oklch(44.4% 0.156 291.5)
- #565800
#565800
oklch(44.4% 0.098 111.3)
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 #583CA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.033
- Blueberry #464196 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.045
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.064
- Twilight #4E518B ΔE 0.069
- Blurple #5539CC ΔE 0.069
- Chrysanthemum #560BAD ΔE 0.073
Use #583CA1 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.