#5B3172
Closest named color: Dark Slate Blue (#483D8B). oklch(39.7% 0.114 312.2), rgb(91, 49, 114).
Aa
White text reads best on this color (9.87:1).
About this color
#5B3172 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.114 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.058 away. White text reads best on it, at 9.87:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #5B3172 |
| RGB | rgb(91, 49, 114) |
| HSL | hsl(279, 40%, 32%) |
| OKLCH | oklch(39.7% 0.114 312.2) |
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 #5B3172 | 9.87:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #5B3172 | 2.12:1 | Fails | Lc 11.4 | Not readable |
| #5B3172 text on white | 9.87:1 | AAA | Lc 92.6 | Preferred for body text |
| #5B3172 text on black | 2.12:1 | Fails | Lc -9.9 | 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
#EFE5F6
oklch(93.5% 0.025 311.7)
-
Step 200
200
#E4D1F0
oklch(88.6% 0.047 312.5)
-
Step 300
300
#D3B1E9
oklch(80.9% 0.085 311.9)
-
Step 400
400
#BD86DE
oklch(70.7% 0.137 312)
-
Step 500
500
#AC65D4
oklch(63.1% 0.173 312)
-
Step 600
600
#9848C1
oklch(55.6% 0.189 312.3)
-
Step 700
700
#8138A7
oklch(49% 0.177 311.9)
-
Step 800
800
#693087
oklch(42.7% 0.145 312)
-
Step 900
900 (this color)
#5B3172
oklch(39.7% 0.114 312.2)
-
Step 950
950
#321A3F
oklch(26.9% 0.072 312.5)
#5B3172 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) | #1F4174 | 0.098 |
| Deuteranopia (no green cones) | #2D4470 | 0.087 |
| Tritanopia (no blue cones) | #593C4C | 0.078 |
| Achromatopsia (no color) | #434343 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3172
#5B3172
oklch(39.7% 0.114 312.2)
- #2F5200
#2F5200
oklch(39.6% 0.11 132)
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 #5B3172, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.058
- Rebecca Purple #663399 ΔE 0.067
- Grape Purple #5D1451 ΔE 0.075
- Blueberry #464196 ΔE 0.075
- Rich Purple #720058 ΔE 0.086
- Twilight #4E518B ΔE 0.088
- Velvet #750851 ΔE 0.090
- Indigo #4B0082 ΔE 0.091
Use #5B3172 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.