#583F9B
Closest named color: Blueberry (#464196). oklch(44.5% 0.144 292.1), rgb(88, 63, 155).
Aa
White text reads best on this color (8.07:1).
About this color
#583F9B is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.144 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.031 away. White text reads best on it, at 8.07:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.59:1 |
| White text | 8.07:1 |
Values
| HEX | #583F9B |
| RGB | rgb(88, 63, 155) |
| HSL | hsl(256, 42%, 43%) |
| OKLCH | oklch(44.5% 0.144 292.1) |
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 #583F9B | 8.07:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #583F9B | 2.59:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #583F9B text on white | 8.07:1 | AAA | Lc 87.6 | Fine for body text |
| #583F9B text on black | 2.59:1 | Fails | Lc -14.5 | 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
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C1B7F3
oklch(80.8% 0.084 292)
-
Step 400
400
#A390ED
oklch(70.8% 0.134 292)
-
Step 500
500
#8E71E7
oklch(63.1% 0.172 292.1)
-
Step 600
600
#7956D5
oklch(55.6% 0.186 291.9)
-
Step 700
700
#6645B9
oklch(49.1% 0.174 291.8)
-
Step 800
800 (this color)
#583F9B
oklch(44.5% 0.144 292.1)
-
Step 900
900
#443377
oklch(37.7% 0.112 291.7)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#583F9B 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) | #00519E | 0.092 |
| Deuteranopia (no green cones) | #0D4E99 | 0.088 |
| Tritanopia (no blue cones) | #455367 | 0.115 |
| Achromatopsia (no color) | #505050 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583F9B
#583F9B
oklch(44.5% 0.144 292.1)
- #565900
#565900
oklch(44.6% 0.099 112)
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 #583F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.031
- Rebecca Purple #663399 ΔE 0.035
- Dark Slate Blue #483D8B ΔE 0.038
- Twilight #4E518B ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Bluey Purple #6241C7 ΔE 0.072
- Dusk #4E5481 ΔE 0.076
- Blurple #5539CC ΔE 0.079
Use #583F9B 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.