#5B3475
Closest named color: Dark Slate Blue (#483D8B). oklch(40.3% 0.112 310), rgb(91, 52, 117).
Aa
White text reads best on this color (9.57:1).
About this color
#5B3475 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.112 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 0.052 away. White text reads best on it, at 9.57:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #5B3475 |
| RGB | rgb(91, 52, 117) |
| HSL | hsl(276, 38%, 33%) |
| OKLCH | oklch(40.3% 0.112 310) |
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 #5B3475 | 9.57:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #5B3475 | 2.19:1 | Fails | Lc 12.1 | Not readable |
| #5B3475 text on white | 9.57:1 | AAA | Lc 91.9 | Preferred for body text |
| #5B3475 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#EEE7F4
oklch(93.7% 0.019 309.8)
-
Step 200
200
#E0D3EC
oklch(88.5% 0.037 308.8)
-
Step 300
300
#CEB5E1
oklch(80.9% 0.067 310.4)
-
Step 400
400
#B58ED2
oklch(70.8% 0.105 310.1)
-
Step 500
500
#A270C5
oklch(63% 0.134 310.1)
-
Step 600
600
#8D57B2
oklch(55.6% 0.145 309.9)
-
Step 700
700
#784799
oklch(49.1% 0.135 309.9)
-
Step 800
800 (this color)
#5B3475
oklch(40.3% 0.112 310)
-
Step 900
900
#503364
oklch(37.8% 0.087 310.1)
-
Step 950
950
#2F1E3A
oklch(27% 0.055 311.1)
#5B3475 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) | #224377 | 0.092 |
| Deuteranopia (no green cones) | #2E4673 | 0.084 |
| Tritanopia (no blue cones) | #583F4F | 0.078 |
| Achromatopsia (no color) | #454545 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3475
#5B3475
oklch(40.3% 0.112 310)
- #345300
#345300
oklch(40.2% 0.108 130)
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 #5B3475, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.052
- Rebecca Purple #663399 ΔE 0.063
- Blueberry #464196 ΔE 0.069
- Twilight #4E518B ΔE 0.080
- Grape Purple #5D1451 ΔE 0.083
- Dusk #4E5481 ΔE 0.086
- Rich Purple #720058 ΔE 0.093
- Indigo #4B0082 ΔE 0.095
Use #5B3475 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.