#5B336F
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.106 313.3), rgb(91, 51, 111).
Aa
White text reads best on this color (9.77:1).
About this color
#5B336F is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.106 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.060 away. White text reads best on it, at 9.77:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.77:1 |
Values
| HEX | #5B336F |
| RGB | rgb(91, 51, 111) |
| HSL | hsl(280, 37%, 32%) |
| OKLCH | oklch(39.8% 0.106 313.3) |
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 #5B336F | 9.77:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #5B336F | 2.14:1 | Fails | Lc 11.6 | Not readable |
| #5B336F text on white | 9.77:1 | AAA | Lc 92.4 | Preferred for body text |
| #5B336F text on black | 2.14:1 | Fails | Lc -10.0 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E4D1EE
oklch(88.5% 0.044 314.1)
-
Step 300
300
#D3B2E6
oklch(80.9% 0.08 313)
-
Step 400
400
#BD88D9
oklch(70.8% 0.128 313.4)
-
Step 500
500
#AC67CE
oklch(63.1% 0.163 313.5)
-
Step 600
600
#974CBB
oklch(55.7% 0.177 313.3)
-
Step 700
700
#813CA1
oklch(49.1% 0.165 313.5)
-
Step 800
800
#693283
oklch(42.7% 0.138 313.4)
-
Step 900
900 (this color)
#5B336F
oklch(39.8% 0.106 313.3)
-
Step 950
950
#321B3D
oklch(27% 0.067 313.9)
#5B336F 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) | #254271 | 0.091 |
| Deuteranopia (no green cones) | #31456D | 0.082 |
| Tritanopia (no blue cones) | #593D4C | 0.072 |
| Achromatopsia (no color) | #444444 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B336F
#5B336F
oklch(39.8% 0.106 313.3)
- #2E5309
#2E5309
oklch(39.9% 0.107 133.6)
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 #5B336F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.060
- Rebecca Purple #663399 ΔE 0.072
- Grape Purple #5D1451 ΔE 0.075
- Blueberry #464196 ΔE 0.077
- Twilight #4E518B ΔE 0.085
- Rich Purple #720058 ΔE 0.087
- Dusk #4E5481 ΔE 0.089
- Velvet #750851 ΔE 0.089
Use #5B336F 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.