#5B3976
Closest named color: Dark Slate Blue (#483D8B). oklch(41.3% 0.104 308.2), rgb(91, 57, 118).
Aa
White text reads best on this color (9.16:1).
About this color
#5B3976 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.104 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.048 away. White text reads best on it, at 9.16:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #5B3976 |
| RGB | rgb(91, 57, 118) |
| HSL | hsl(273, 35%, 34%) |
| OKLCH | oklch(41.3% 0.104 308.2) |
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 #5B3976 | 9.16:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #5B3976 | 2.29:1 | Fails | Lc 13.1 | Not readable |
| #5B3976 text on white | 9.16:1 | AAA | Lc 90.9 | Preferred for body text |
| #5B3976 text on black | 2.29:1 | Fails | Lc -11.4 | 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 800.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#DFD4EB
oklch(88.6% 0.033 307.1)
-
Step 300
300
#CCB7DF
oklch(81% 0.06 308.7)
-
Step 400
400
#B290D0
oklch(70.8% 0.098 308.3)
-
Step 500
500
#9F73C3
oklch(63.1% 0.125 308.5)
-
Step 600
600
#8A5AAF
oklch(55.6% 0.136 308.7)
-
Step 700
700
#754A97
oklch(49.2% 0.126 308.2)
-
Step 800
800 (this color)
#5B3976
oklch(41.3% 0.104 308.2)
-
Step 900
900
#4E3462
oklch(37.6% 0.082 309)
-
Step 950
950
#2D1F3A
oklch(27% 0.052 307.1)
#5B3976 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) | #294678 | 0.081 |
| Deuteranopia (no green cones) | #324874 | 0.074 |
| Tritanopia (no blue cones) | #574352 | 0.074 |
| Achromatopsia (no color) | #484848 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3976
#5B3976
oklch(41.3% 0.104 308.2)
- #3A5506
#3A5506
oklch(41.3% 0.104 128.2)
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 #5B3976, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.048
- Rebecca Purple #663399 ΔE 0.063
- Blueberry #464196 ΔE 0.064
- Twilight #4E518B ΔE 0.068
- Dusk #4E5481 ΔE 0.074
- Dusty Grape #545775 ΔE 0.085
- Grape Purple #5D1451 ΔE 0.092
- Brownish Purple #76424E ΔE 0.095
Use #5B3976 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.