#5B2B79
Closest named color: Dark Slate Blue (#483D8B). oklch(39.2% 0.132 310), rgb(91, 43, 121).
Aa
White text reads best on this color (10.16:1).
About this color
#5B2B79 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.132 and its hue 310°. 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 10.16:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.16:1 |
Values
| HEX | #5B2B79 |
| RGB | rgb(91, 43, 121) |
| HSL | hsl(277, 48%, 32%) |
| OKLCH | oklch(39.2% 0.132 310) |
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 #5B2B79 | 10.16:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #5B2B79 | 2.06:1 | Fails | Lc 10.8 | Not readable |
| #5B2B79 text on white | 10.16:1 | AAA | Lc 93.1 | Preferred for body text |
| #5B2B79 text on black | 2.06:1 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#F0E5F9
oklch(93.6% 0.029 310.1)
-
Step 200
200
#E4D0F5
oklch(88.5% 0.054 309.5)
-
Step 300
300
#D4AFF1
oklch(80.9% 0.099 309.8)
-
Step 400
400
#BF82E9
oklch(70.8% 0.157 310.2)
-
Step 500
500
#AF5DE2
oklch(63.1% 0.202 310.3)
-
Step 600
600
#9A3DD0
oklch(55.6% 0.219 310)
-
Step 700
700
#842DB4
oklch(49.1% 0.204 310.3)
-
Step 800
800
#6B2892
oklch(42.8% 0.169 310)
-
Step 900
900 (this color)
#5B2B79
oklch(39.2% 0.132 310)
-
Step 950
950
#331844
oklch(27.1% 0.083 310.3)
#5B2B79 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) | #073F7B | 0.117 |
| Deuteranopia (no green cones) | #224277 | 0.102 |
| Tritanopia (no blue cones) | #573A4E | 0.090 |
| Achromatopsia (no color) | #414141 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B2B79
#5B2B79
oklch(39.2% 0.132 310)
- #325000
#325000
oklch(39.2% 0.106 130)
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 #5B2B79, 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 0.058
- Indigo #4B0082 ΔE 0.075
- Blueberry #464196 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.077
- Royal Purple #4B006E ΔE 0.079
- Purple #800080 ΔE 0.085
- Rich Purple #720058 ΔE 0.086
Use #5B2B79 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.