#5A3570
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.104 311.5), rgb(90, 53, 112).
Aa
White text reads best on this color (9.64:1).
About this color
#5A3570 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.104 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.056 away. White text reads best on it, at 9.64:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.64:1 |
Values
| HEX | #5A3570 |
| RGB | rgb(90, 53, 112) |
| HSL | hsl(278, 36%, 32%) |
| OKLCH | oklch(40.1% 0.104 311.5) |
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 #5A3570 | 9.64:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #5A3570 | 2.17:1 | Fails | Lc 11.9 | Not readable |
| #5A3570 text on white | 9.64:1 | AAA | Lc 92.1 | Preferred for body text |
| #5A3570 text on black | 2.17:1 | Fails | Lc -10.3 | 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
#F8F4FB
oklch(97.2% 0.01 311.2)
-
Step 100
100
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E3D2EE
oklch(88.6% 0.042 312.3)
-
Step 300
300
#D1B3E6
oklch(80.9% 0.077 311.2)
-
Step 400
400
#BA89D9
oklch(70.7% 0.125 311.6)
-
Step 500
500
#A969CE
oklch(63.1% 0.159 311.9)
-
Step 600
600
#944EBB
oklch(55.6% 0.173 311.7)
-
Step 700
700
#7E3EA1
oklch(49% 0.16 311.7)
-
Step 800
800
#663483
oklch(42.6% 0.133 311.2)
-
Step 900
900 (this color)
#5A3570
oklch(40.1% 0.104 311.5)
-
Step 950
950
#311C3D
oklch(27% 0.065 312.1)
#5A3570 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) | #274372 | 0.085 |
| Deuteranopia (no green cones) | #31456E | 0.077 |
| Tritanopia (no blue cones) | #583F4D | 0.073 |
| Achromatopsia (no color) | #454545 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A3570
#5A3570
oklch(40.1% 0.104 311.5)
- #32530A
#32530A
oklch(40.2% 0.104 131.9)
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 #5A3570, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.056
- Rebecca Purple #663399 ΔE 0.072
- Blueberry #464196 ΔE 0.074
- Grape Purple #5D1451 ΔE 0.080
- Twilight #4E518B ΔE 0.080
- Dusk #4E5481 ΔE 0.084
- Rich Purple #720058 ΔE 0.092
- Purple Brown #673A3F ΔE 0.092
Use #5A3570 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.