#5B336B
Closest named color: Dark Slate Blue (#483D8B). oklch(39.6% 0.101 315.6), rgb(91, 51, 107).
Aa
White text reads best on this color (9.85:1).
About this color
#5B336B is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.101 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.065 away. White text reads best on it, at 9.85:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #5B336B |
| RGB | rgb(91, 51, 107) |
| HSL | hsl(283, 35%, 31%) |
| OKLCH | oklch(39.6% 0.101 315.6) |
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 #5B336B | 9.85:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #5B336B | 2.13:1 | Fails | Lc 11.3 | Not readable |
| #5B336B text on white | 9.85:1 | AAA | Lc 92.6 | Preferred for body text |
| #5B336B text on black | 2.13:1 | Fails | Lc -9.8 | 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
#F8F3FA
oklch(97% 0.011 316.5)
-
Step 100
100
#F0E6F4
oklch(93.7% 0.021 316.5)
-
Step 200
200
#E4D1ED
oklch(88.5% 0.043 315)
-
Step 300
300
#D4B2E2
oklch(80.9% 0.076 316)
-
Step 400
400
#BE88D4
oklch(70.7% 0.122 315.8)
-
Step 500
500
#AD68C8
oklch(63% 0.156 315.8)
-
Step 600
600
#984DB5
oklch(55.6% 0.169 315.6)
-
Step 700
700
#823D9C
oklch(49.1% 0.158 315.7)
-
Step 800
800
#69347E
oklch(42.7% 0.129 315.4)
-
Step 900
900 (this color)
#5B336B
oklch(39.6% 0.101 315.6)
-
Step 950
950
#321B3B
oklch(26.8% 0.064 315.9)
#5B336B 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) | #27416D | 0.089 |
| Deuteranopia (no green cones) | #334469 | 0.079 |
| Tritanopia (no blue cones) | #5A3B4A | 0.066 |
| Achromatopsia (no color) | #434343 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B336B
#5B336B
oklch(39.6% 0.101 315.6)
- #2C5212
#2C5212
oklch(39.6% 0.102 135.4)
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 #5B336B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.065
- Grape Purple #5D1451 ΔE 0.072
- Rebecca Purple #663399 ΔE 0.079
- Blueberry #464196 ΔE 0.083
- Rich Purple #720058 ΔE 0.085
- Velvet #750851 ΔE 0.086
- Purple Brown #673A3F ΔE 0.087
- Twilight #4E518B ΔE 0.088
Use #5B336B 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.