#5B366B
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.096 314.9), rgb(91, 54, 107).
Aa
White text reads best on this color (9.61:1).
About this color
#5B366B is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.096 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.063 away. White text reads best on it, at 9.61:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.096) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #5B366B |
| RGB | rgb(91, 54, 107) |
| HSL | hsl(282, 33%, 32%) |
| OKLCH | oklch(40.1% 0.096 314.9) |
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 #5B366B | 9.61:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #5B366B | 2.18:1 | Fails | Lc 11.9 | Not readable |
| #5B366B text on white | 9.61:1 | AAA | Lc 92.0 | Preferred for body text |
| #5B366B text on black | 2.18:1 | Fails | Lc -10.4 | 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 900.
-
Step 50
50
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F4
oklch(93.6% 0.021 313.8)
-
Step 200
200
#E3D2EC
oklch(88.5% 0.04 314.1)
-
Step 300
300
#D2B3E1
oklch(80.8% 0.072 314.7)
-
Step 400
400
#BC8AD2
oklch(70.7% 0.115 315.2)
-
Step 500
500
#AA6BC6
oklch(63.1% 0.147 314.7)
-
Step 600
600
#9551B2
oklch(55.6% 0.159 314.8)
-
Step 700
700
#7F4199
oklch(49.1% 0.147 314.8)
-
Step 800
800
#68367C
oklch(42.7% 0.123 315.4)
-
Step 900
900 (this color)
#5B366B
oklch(40.1% 0.096 314.9)
-
Step 950
950
#311C3B
oklch(26.9% 0.062 314.1)
#5B366B 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) | #2B436D | 0.082 |
| Deuteranopia (no green cones) | #36466A | 0.073 |
| Tritanopia (no blue cones) | #5A3E4B | 0.065 |
| Achromatopsia (no color) | #454545 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B366B
#5B366B
oklch(40.1% 0.096 314.9)
- #305318
#305318
oklch(40.2% 0.096 134.9)
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 #5B366B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.063
- Grape Purple #5D1451 ΔE 0.078
- Rebecca Purple #663399 ΔE 0.080
- Blueberry #464196 ΔE 0.081
- Twilight #4E518B ΔE 0.082
- Purple Brown #673A3F ΔE 0.083
- Dusk #4E5481 ΔE 0.084
- Brownish Purple #76424E ΔE 0.087
Use #5B366B 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.