#582F81
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.134 304), rgb(88, 47, 129).
Aa
White text reads best on this color (9.81:1).
About this color
#582F81 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.134 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 9.81:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.81:1 |
Values
| HEX | #582F81 |
| RGB | rgb(88, 47, 129) |
| HSL | hsl(270, 47%, 35%) |
| OKLCH | oklch(40% 0.134 304) |
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 #582F81 | 9.81:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #582F81 | 2.13:1 | Fails | Lc 11.6 | Not readable |
| #582F81 text on white | 9.81:1 | AAA | Lc 92.3 | Preferred for body text |
| #582F81 text on black | 2.13:1 | Fails | Lc -10.1 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE5FA
oklch(93.5% 0.03 305.1)
-
Step 200
200
#E1D1F8
oklch(88.6% 0.056 303.9)
-
Step 300
300
#CFB1F6
oklch(81% 0.1 304.1)
-
Step 400
400
#B784F1
oklch(70.7% 0.161 304.2)
-
Step 500
500
#A560EC
oklch(63.1% 0.205 303.8)
-
Step 600
600
#9140DA
oklch(55.6% 0.223 303.9)
-
Step 700
700
#7C30BD
oklch(49.1% 0.208 304.1)
-
Step 800
800
#652A99
oklch(42.8% 0.172 304.2)
-
Step 900
900 (this color)
#582F81
oklch(40% 0.134 304)
-
Step 950
950
#301947
oklch(27% 0.084 304.4)
#582F81 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) | #004384 | 0.110 |
| Deuteranopia (no green cones) | #1A437F | 0.098 |
| Tritanopia (no blue cones) | #504053 | 0.099 |
| Achromatopsia (no color) | #434343 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #582F81
#582F81
oklch(40% 0.134 304)
- #3D5000
#3D5000
oklch(40% 0.099 123.8)
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 #582F81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Rebecca Purple #663399 ΔE 0.048
- Blueberry #464196 ΔE 0.059
- Indigo #4B0082 ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.086
- Twilight #4E518B ΔE 0.086
- Royal Purple #4B006E ΔE 0.087
- Imperial Purple #480CA8 ΔE 0.090
Use #582F81 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.