#583F80
Closest named color: Dark Slate Blue (#483D8B). oklch(42.6% 0.107 299.6), rgb(88, 63, 128).
Aa
White text reads best on this color (8.61:1).
About this color
#583F80 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.107 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 0.035 away. White text reads best on it, at 8.61:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #583F80 |
| RGB | rgb(88, 63, 128) |
| HSL | hsl(263, 34%, 37%) |
| OKLCH | oklch(42.6% 0.107 299.6) |
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 #583F80 | 8.61:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #583F80 | 2.43:1 | Fails | Lc 14.6 | Not readable |
| #583F80 text on white | 8.61:1 | AAA | Lc 89.4 | Fine for body text |
| #583F80 text on black | 2.43:1 | Fails | Lc -12.8 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE7F4
oklch(93.5% 0.018 300.1)
-
Step 200
200
#DCD4ED
oklch(88.4% 0.035 300.3)
-
Step 300
300
#C6B8E4
oklch(80.9% 0.063 299.5)
-
Step 400
400
#AA92D6
oklch(70.7% 0.1 300.1)
-
Step 500
500
#9576CB
oklch(63% 0.128 299.5)
-
Step 600
600
#805DB8
oklch(55.5% 0.14 299.6)
-
Step 700
700
#6C4D9E
oklch(49.1% 0.128 299.3)
-
Step 800
800 (this color)
#583F80
oklch(42.6% 0.107 299.6)
-
Step 900
900
#483667
oklch(37.6% 0.083 299.3)
-
Step 950
950
#2A203C
oklch(26.9% 0.052 299.3)
#583F80 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) | #2A4C82 | 0.072 |
| Deuteranopia (no green cones) | #304B7E | 0.066 |
| Tritanopia (no blue cones) | #504B59 | 0.083 |
| Achromatopsia (no color) | #4C4C4C | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583F80
#583F80
oklch(42.6% 0.107 299.6)
- #495600
#495600
oklch(42.7% 0.101 119.3)
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 #583F80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.047
- Twilight #4E518B ΔE 0.050
- Rebecca Purple #663399 ΔE 0.056
- Dusk #4E5481 ΔE 0.059
- Dusty Grape #545775 ΔE 0.074
- Dusk Blue #26538D ΔE 0.081
- Cobalt #1E488F ΔE 0.082
Use #583F80 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.