#5B306C
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.108 315.6), rgb(91, 48, 108).
Aa
White text reads best on this color (10.07:1).
About this color
#5B306C is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.108 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 0.066 away. White text reads best on it, at 10.07:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #5B306C |
| RGB | rgb(91, 48, 108) |
| HSL | hsl(283, 38%, 31%) |
| OKLCH | oklch(39.1% 0.108 315.6) |
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 #5B306C | 10.07:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #5B306C | 2.08:1 | Fails | Lc 10.9 | Not readable |
| #5B306C text on white | 10.07:1 | AAA | Lc 93.1 | Preferred for body text |
| #5B306C text on black | 2.08:1 | Fails | Lc -9.4 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#F0E5F5
oklch(93.5% 0.024 315.5)
-
Step 200
200
#E5D1EE
oklch(88.6% 0.045 315.5)
-
Step 300
300
#D5B1E5
oklch(80.9% 0.082 315.4)
-
Step 400
400
#BF86D7
oklch(70.6% 0.13 315.5)
-
Step 500
500
#AF65CC
oklch(63% 0.166 315.7)
-
Step 600
600
#9A49B9
oklch(55.5% 0.18 315.5)
-
Step 700
700
#843AA0
oklch(49.2% 0.168 315.5)
-
Step 800
800
#6B3181
oklch(42.7% 0.138 315.6)
-
Step 900
900 (this color)
#5B306C
oklch(39.1% 0.108 315.6)
-
Step 950
950
#331A3D
oklch(26.9% 0.07 315.6)
#5B306C 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) | #223F6E | 0.096 |
| Deuteranopia (no green cones) | #30436A | 0.085 |
| Tritanopia (no blue cones) | #5A3949 | 0.071 |
| Achromatopsia (no color) | #424242 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B306C
#5B306C
oklch(39.1% 0.108 315.6)
- #285109
#285109
oklch(39% 0.108 135.6)
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 #5B306C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.066
- Grape Purple #5D1451 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.077
- Rich Purple #720058 ΔE 0.081
- Velvet #750851 ΔE 0.084
- Blueberry #464196 ΔE 0.084
- Royal Purple #4B006E ΔE 0.091
- Purple Brown #673A3F ΔE 0.092
Use #5B306C 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.