#5B3984
Closest named color: Dark Slate Blue (#483D8B). oklch(42.2% 0.123 302.4), rgb(91, 57, 132).
Aa
White text reads best on this color (8.88:1).
About this color
#5B3984 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.123 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 0.036 away. White text reads best on it, at 8.88:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #5B3984 |
| RGB | rgb(91, 57, 132) |
| HSL | hsl(267, 40%, 37%) |
| OKLCH | oklch(42.2% 0.123 302.4) |
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 #5B3984 | 8.88:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #5B3984 | 2.36:1 | Fails | Lc 13.9 | Not readable |
| #5B3984 text on white | 8.88:1 | AAA | Lc 90.1 | Preferred for body text |
| #5B3984 text on black | 2.36:1 | Fails | Lc -12.2 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DED3F0
oklch(88.5% 0.041 302.8)
-
Step 300
300
#C9B6E8
oklch(80.9% 0.072 302.2)
-
Step 400
400
#AE8FDC
oklch(70.7% 0.114 302.1)
-
Step 500
500
#9B71D2
oklch(63.1% 0.146 302.4)
-
Step 600
600
#8657BF
oklch(55.6% 0.159 302.4)
-
Step 700
700
#7246A5
oklch(49.1% 0.149 302.6)
-
Step 800
800 (this color)
#5B3984
oklch(42.2% 0.123 302.4)
-
Step 900
900
#4C336B
oklch(37.7% 0.096 302.7)
-
Step 950
950
#2C1E3F
oklch(26.9% 0.062 302)
#5B3984 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) | #1C4987 | 0.092 |
| Deuteranopia (no green cones) | #284A82 | 0.084 |
| Tritanopia (no blue cones) | #534859 | 0.093 |
| Achromatopsia (no color) | #4A4A4A | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3984
#5B3984
oklch(42.2% 0.123 302.4)
- #445600
#445600
oklch(42.3% 0.103 122.5)
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 #5B3984, 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
- Rebecca Purple #663399 ΔE 0.042
- Blueberry #464196 ΔE 0.048
- Twilight #4E518B ΔE 0.064
- Dusk #4E5481 ΔE 0.075
- Cobalt #1E488F ΔE 0.090
- Dusty Grape #545775 ΔE 0.092
- Dusk Blue #26538D ΔE 0.094
Use #5B3984 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.