#5B3073
Closest named color: Dark Slate Blue (#483D8B). oklch(39.6% 0.116 311.9), rgb(91, 48, 115).
Aa
White text reads best on this color (9.92:1).
About this color
#5B3073 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.116 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 9.92:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #5B3073 |
| RGB | rgb(91, 48, 115) |
| HSL | hsl(279, 41%, 32%) |
| OKLCH | oklch(39.6% 0.116 311.9) |
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 #5B3073 | 9.92:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #5B3073 | 2.11:1 | Fails | Lc 11.3 | Not readable |
| #5B3073 text on white | 9.92:1 | AAA | Lc 92.7 | Preferred for body text |
| #5B3073 text on black | 2.11:1 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#F0E5F6
oklch(93.6% 0.025 314)
-
Step 200
200
#E4D1F1
oklch(88.6% 0.048 311.7)
-
Step 300
300
#D4B1EA
oklch(81% 0.087 312.1)
-
Step 400
400
#BD85DF
oklch(70.6% 0.14 311.8)
-
Step 500
500
#AD63D6
oklch(63% 0.179 312.1)
-
Step 600
600
#9846C3
oklch(55.5% 0.194 311.9)
-
Step 700
700
#8237A9
oklch(49.2% 0.18 311.8)
-
Step 800
800
#6A2F89
oklch(42.8% 0.149 311.9)
-
Step 900
900 (this color)
#5B3073
oklch(39.6% 0.116 311.9)
-
Step 950
950
#321A40
oklch(27% 0.073 311.6)
#5B3073 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) | #1C4175 | 0.101 |
| Deuteranopia (no green cones) | #2C4471 | 0.089 |
| Tritanopia (no blue cones) | #583C4C | 0.081 |
| Achromatopsia (no color) | #434343 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3073
#5B3073
oklch(39.6% 0.116 311.9)
- #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 #5B3073, 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 0.066
- Grape Purple #5D1451 ΔE 0.074
- Blueberry #464196 ΔE 0.075
- Rich Purple #720058 ΔE 0.086
- Indigo #4B0082 ΔE 0.088
- Royal Purple #4B006E ΔE 0.089
- Twilight #4E518B ΔE 0.089
Use #5B3073 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.