#523F83
Closest named color: Dark Slate Blue (#483D8B). oklch(42.2% 0.11 294.1), rgb(82, 63, 131).
Aa
White text reads best on this color (8.75:1).
About this color
#523F83 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.110 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.023 away. White text reads best on it, at 8.75:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.39:1 |
| White text | 8.75:1 |
Values
| HEX | #523F83 |
| RGB | rgb(82, 63, 131) |
| HSL | hsl(257, 35%, 38%) |
| OKLCH | oklch(42.2% 0.11 294.1) |
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 #523F83 | 8.75:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #523F83 | 2.39:1 | Fails | Lc 14.2 | Not readable |
| #523F83 text on white | 8.75:1 | AAA | Lc 89.8 | Fine for body text |
| #523F83 text on black | 2.39:1 | Fails | Lc -12.4 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DAD5EF
oklch(88.5% 0.036 294.5)
-
Step 300
300
#C2B9E7
oklch(80.8% 0.065 293.9)
-
Step 400
400
#A494DB
oklch(70.7% 0.103 293.9)
-
Step 500
500
#8F78D1
oklch(63.2% 0.132 294.2)
-
Step 600
600
#795FBE
oklch(55.6% 0.144 293.8)
-
Step 700
700
#664EA4
oklch(49.1% 0.134 293.8)
-
Step 800
800 (this color)
#523F83
oklch(42.2% 0.11 294.1)
-
Step 900
900
#45376A
oklch(37.7% 0.086 294.6)
-
Step 950
950
#28213E
oklch(27.1% 0.053 293.6)
#523F83 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) | #254B85 | 0.066 |
| Deuteranopia (no green cones) | #294A81 | 0.063 |
| Tritanopia (no blue cones) | #464C5B | 0.087 |
| Achromatopsia (no color) | #4B4B4B | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #523F83
#523F83
oklch(42.2% 0.11 294.1)
- #4D5300
#4D5300
oklch(42.2% 0.095 114.5)
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 #523F83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.023
- Blueberry #464196 ΔE 0.037
- Twilight #4E518B ΔE 0.048
- Rebecca Purple #663399 ΔE 0.058
- Dusk #4E5481 ΔE 0.059
- Cobalt #1E488F ΔE 0.071
- Dusk Blue #26538D ΔE 0.074
- Dusty Grape #545775 ΔE 0.078
Use #523F83 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.