#523A78
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.103 299.7), rgb(82, 58, 120).
Aa
White text reads best on this color (9.39:1).
About this color
#523A78 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.103 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 0.036 away. White text reads best on it, at 9.39:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.23:1 |
| White text | 9.39:1 |
Values
| HEX | #523A78 |
| RGB | rgb(82, 58, 120) |
| HSL | hsl(263, 35%, 35%) |
| OKLCH | oklch(40.6% 0.103 299.7) |
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 #523A78 | 9.39:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #523A78 | 2.23:1 | Fails | Lc 12.4 | Not readable |
| #523A78 text on white | 9.39:1 | AAA | Lc 91.5 | Preferred for body text |
| #523A78 text on black | 2.23:1 | Fails | Lc -10.8 | 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
#DCD5ED
oklch(88.6% 0.033 299)
-
Step 300
300
#C6B8E2
oklch(80.8% 0.06 300.3)
-
Step 400
400
#A993D4
oklch(70.7% 0.096 299.5)
-
Step 500
500
#9577C9
oklch(63.1% 0.124 299.7)
-
Step 600
600
#805EB5
oklch(55.5% 0.134 300.1)
-
Step 700
700
#6C4E9C
oklch(49.2% 0.123 299.6)
-
Step 800
800 (this color)
#523A78
oklch(40.6% 0.103 299.7)
-
Step 900
900
#483766
oklch(37.8% 0.08 299.2)
-
Step 950
950
#2A203C
oklch(26.9% 0.052 299.3)
#523A78 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) | #25467A | 0.070 |
| Deuteranopia (no green cones) | #2B4676 | 0.065 |
| Tritanopia (no blue cones) | #4A4653 | 0.081 |
| Achromatopsia (no color) | #464646 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #523A78
#523A78
oklch(40.6% 0.103 299.7)
- #435000
#435000
oklch(40.5% 0.096 119.8)
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 #523A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.036
- Blueberry #464196 ΔE 0.054
- Twilight #4E518B ΔE 0.065
- Rebecca Purple #663399 ΔE 0.068
- Dusk #4E5481 ΔE 0.071
- Cobalt #1E488F ΔE 0.081
- Dusty Grape #545775 ΔE 0.085
- Dusk Blue #26538D ΔE 0.086
Use #523A78 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.