#583771
Closest named color: Dark Slate Blue (#483D8B). oklch(40.3% 0.1 308.8), rgb(88, 55, 113).
Aa
White text reads best on this color (9.54:1).
About this color
#583771 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.100 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.052 away. White text reads best on it, at 9.54:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.54:1 |
Values
| HEX | #583771 |
| RGB | rgb(88, 55, 113) |
| HSL | hsl(274, 35%, 33%) |
| OKLCH | oklch(40.3% 0.1 308.8) |
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 #583771 | 9.54:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #583771 | 2.19:1 | Fails | Lc 12.1 | Not readable |
| #583771 text on white | 9.54:1 | AAA | Lc 91.9 | Preferred for body text |
| #583771 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EA
oklch(88.5% 0.032 308.1)
-
Step 300
300
#CCB7DE
oklch(81% 0.059 309.3)
-
Step 400
400
#B291CD
oklch(70.8% 0.093 309.2)
-
Step 500
500
#9E74C0
oklch(63% 0.119 308.7)
-
Step 600
600
#895BAD
oklch(55.5% 0.131 308.6)
-
Step 700
700
#754B94
oklch(49.2% 0.121 309.2)
-
Step 800
800 (this color)
#583771
oklch(40.3% 0.1 308.8)
-
Step 900
900
#4E3561
oklch(37.7% 0.078 309.2)
-
Step 950
950
#2D1F39
oklch(26.9% 0.05 308.1)
#583771 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) | #284473 | 0.079 |
| Deuteranopia (no green cones) | #31466F | 0.073 |
| Tritanopia (no blue cones) | #55414E | 0.073 |
| Achromatopsia (no color) | #454545 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583771
#583771
oklch(40.3% 0.1 308.8)
- #375209
#375209
oklch(40.2% 0.1 128.9)
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 #583771, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.052
- Blueberry #464196 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.072
- Twilight #4E518B ΔE 0.075
- Dusk #4E5481 ΔE 0.079
- Grape Purple #5D1451 ΔE 0.085
- Dusty Grape #545775 ΔE 0.089
- Purple Brown #673A3F ΔE 0.093
Use #583771 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.