#5B3D90
Closest named color: Rebecca Purple (#663399). oklch(43.7% 0.132 297.3), rgb(91, 61, 144).
Aa
White text reads best on this color (8.34:1).
About this color
#5B3D90 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.132 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.032 away. White text reads best on it, at 8.34:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.51:1 |
| White text | 8.34:1 |
Values
| HEX | #5B3D90 |
| RGB | rgb(91, 61, 144) |
| HSL | hsl(262, 40%, 40%) |
| OKLCH | oklch(43.7% 0.132 297.3) |
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 #5B3D90 | 8.34:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #5B3D90 | 2.51:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #5B3D90 text on white | 8.34:1 | AAA | Lc 88.5 | Fine for body text |
| #5B3D90 text on black | 2.51:1 | Fails | Lc -13.7 | 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
#DCD4F3
oklch(88.6% 0.043 297.3)
-
Step 300
300
#C6B7ED
oklch(81% 0.077 297.4)
-
Step 400
400
#A98FE4
oklch(70.7% 0.124 297.2)
-
Step 500
500
#9571DC
oklch(63.1% 0.158 297.2)
-
Step 600
600
#8057C9
oklch(55.6% 0.171 297.1)
-
Step 700
700
#6D46AE
oklch(49.1% 0.159 297.5)
-
Step 800
800 (this color)
#5B3D90
oklch(43.7% 0.132 297.3)
-
Step 900
900
#483371
oklch(37.7% 0.103 296.8)
-
Step 950
950
#2A1E42
oklch(26.9% 0.066 297.1)
#5B3D90 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) | #164E93 | 0.092 |
| Deuteranopia (no green cones) | #214D8E | 0.085 |
| Tritanopia (no blue cones) | #4F4E60 | 0.103 |
| Achromatopsia (no color) | #4E4E4E | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3D90
#5B3D90
oklch(43.7% 0.132 297.3)
- #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 #5B3D90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.037
- Twilight #4E518B ΔE 0.056
- Dusk #4E5481 ΔE 0.072
- Cobalt #1E488F ΔE 0.085
- Denim Blue #3B5B92 ΔE 0.087
- Dusk Blue #26538D ΔE 0.088
Use #5B3D90 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.