#5B3767
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.089 317.3), rgb(91, 55, 103).
Aa
White text reads best on this color (9.60:1).
About this color
#5B3767 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.089 and its hue 317°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.069 away. White text reads best on it, at 9.60:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.18:1 |
| White text | 9.60:1 |
Values
| HEX | #5B3767 |
| RGB | rgb(91, 55, 103) |
| HSL | hsl(285, 30%, 31%) |
| OKLCH | oklch(40% 0.089 317.3) |
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 #5B3767 | 9.60:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #5B3767 | 2.18:1 | Fails | Lc 11.9 | Not readable |
| #5B3767 text on white | 9.60:1 | AAA | Lc 92.0 | Preferred for body text |
| #5B3767 text on black | 2.18:1 | Fails | Lc -10.4 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F3
oklch(93.6% 0.02 315.7)
-
Step 200
200
#E3D2EA
oklch(88.5% 0.037 316.2)
-
Step 300
300
#D3B4DD
oklch(81% 0.066 317.9)
-
Step 400
400
#BC8BCC
oklch(70.7% 0.107 317.6)
-
Step 500
500
#AB6DBF
oklch(63.2% 0.136 317.6)
-
Step 600
600
#9653AB
oklch(55.6% 0.148 317.6)
-
Step 700
700
#804393
oklch(49.2% 0.138 317.6)
-
Step 800
800
#683877
oklch(42.8% 0.113 317.7)
-
Step 900
900 (this color)
#5B3767
oklch(40% 0.089 317.3)
-
Step 950
950
#311D38
oklch(26.9% 0.055 317)
#5B3767 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) | #2F4369 | 0.077 |
| Deuteranopia (no green cones) | #394666 | 0.069 |
| Tritanopia (no blue cones) | #5B3D4A | 0.057 |
| Achromatopsia (no color) | #454545 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3767
#5B3767
oklch(40% 0.089 317.3)
- #2F531F
#2F531F
oklch(40.2% 0.09 137.1)
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 #5B3767, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.069
- Purple Brown #673A3F ΔE 0.075
- Grape Purple #5D1451 ΔE 0.078
- Brownish Purple #76424E ΔE 0.082
- Dusk #4E5481 ΔE 0.083
- Twilight #4E518B ΔE 0.084
- Blueberry #464196 ΔE 0.086
- Rebecca Purple #663399 ΔE 0.087
Use #5B3767 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.