#5B3E8F
Closest named color: Dark Slate Blue (#483D8B). oklch(43.8% 0.129 297.3), rgb(91, 62, 143).
Aa
White text reads best on this color (8.29:1).
About this color
#5B3E8F is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.129 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 8.29:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #5B3E8F |
| RGB | rgb(91, 62, 143) |
| HSL | hsl(261, 40%, 40%) |
| OKLCH | oklch(43.8% 0.129 297.3) |
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 #5B3E8F | 8.29:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #5B3E8F | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #5B3E8F text on white | 8.29:1 | AAA | Lc 88.4 | Fine for body text |
| #5B3E8F text on black | 2.53:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DCD4F2
oklch(88.6% 0.042 297.7)
-
Step 300
300
#C5B7EC
oklch(80.9% 0.075 296.8)
-
Step 400
400
#A990E2
oklch(70.7% 0.12 297.3)
-
Step 500
500
#9572DA
oklch(63.2% 0.154 297.3)
-
Step 600
600
#8058C8
oklch(55.7% 0.168 297.1)
-
Step 700
700
#6C47AC
oklch(49.1% 0.155 297.2)
-
Step 800
800 (this color)
#5B3E8F
oklch(43.8% 0.129 297.3)
-
Step 900
900
#483370
oklch(37.6% 0.102 297.1)
-
Step 950
950
#2A1F41
oklch(27% 0.062 297)
#5B3E8F 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) | #1A4E92 | 0.088 |
| Deuteranopia (no green cones) | #244D8D | 0.082 |
| Tritanopia (no blue cones) | #4F4E60 | 0.100 |
| Achromatopsia (no color) | #4E4E4E | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3E8F
#5B3E8F
oklch(43.8% 0.129 297.3)
- #4E5800
#4E5800
oklch(43.6% 0.101 117.1)
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 #5B3E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Rebecca Purple #663399 ΔE 0.035
- Blueberry #464196 ΔE 0.037
- Twilight #4E518B ΔE 0.054
- Dusk #4E5481 ΔE 0.069
- Cobalt #1E488F ΔE 0.085
- Denim Blue #3B5B92 ΔE 0.085
- Dusk Blue #26538D ΔE 0.086
Use #5B3E8F 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.