#523B71
Closest named color: Dark Slate Blue (#483D8B). oklch(40.3% 0.091 302.1), rgb(82, 59, 113).
Aa
White text reads best on this color (9.44:1).
About this color
#523B71 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.091 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.046 away. White text reads best on it, at 9.44:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.091) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.22:1 |
| White text | 9.44:1 |
Values
| HEX | #523B71 |
| RGB | rgb(82, 59, 113) |
| HSL | hsl(266, 31%, 34%) |
| OKLCH | oklch(40.3% 0.091 302.1) |
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 #523B71 | 9.44:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #523B71 | 2.22:1 | Fails | Lc 12.2 | Not readable |
| #523B71 text on white | 9.44:1 | AAA | Lc 91.7 | Preferred for body text |
| #523B71 text on black | 2.22:1 | Fails | Lc -10.7 | 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
#ECE8F3
oklch(93.7% 0.015 302.5)
-
Step 200
200
#DCD5EA
oklch(88.5% 0.029 301)
-
Step 300
300
#C7B9DE
oklch(80.9% 0.054 302.4)
-
Step 400
400
#AA94CD
oklch(70.6% 0.085 302)
-
Step 500
500
#9679C0
oklch(63.1% 0.108 302.2)
-
Step 600
600
#8161AC
oklch(55.7% 0.117 302.4)
-
Step 700
700
#6D5094
oklch(49.2% 0.109 302.2)
-
Step 800
800 (this color)
#523B71
oklch(40.3% 0.091 302.1)
-
Step 900
900
#493861
oklch(37.8% 0.071 302.2)
-
Step 950
950
#2B2139
oklch(27.1% 0.045 302.6)
#523B71 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) | #2C4673 | 0.062 |
| Deuteranopia (no green cones) | #314670 | 0.058 |
| Tritanopia (no blue cones) | #4C4450 | 0.070 |
| Achromatopsia (no color) | #464646 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #523B71
#523B71
oklch(40.3% 0.091 302.1)
- #40500B
#40500B
oklch(40.4% 0.092 122.5)
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 #523B71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Blueberry #464196 ΔE 0.064
- Twilight #4E518B ΔE 0.067
- Dusk #4E5481 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.079
- Dusty Grape #545775 ΔE 0.080
- Dark Grey Blue #29465B ΔE 0.083
- Cobalt #1E488F ΔE 0.085
Use #523B71 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.