#5A3591
Closest named color: Rebecca Purple (#663399). oklch(42.3% 0.146 298.5), rgb(90, 53, 145).
Aa
White text reads best on this color (8.92:1).
About this color
#5A3591 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.146 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.026 away. White text reads best on it, at 8.92:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #5A3591 |
| RGB | rgb(90, 53, 145) |
| HSL | hsl(264, 46%, 39%) |
| OKLCH | oklch(42.3% 0.146 298.5) |
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 #5A3591 | 8.92:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #5A3591 | 2.35:1 | Fails | Lc 13.9 | Not readable |
| #5A3591 text on white | 8.92:1 | AAA | Lc 90.0 | Preferred for body text |
| #5A3591 text on black | 2.35:1 | Fails | Lc -12.2 | 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
#ECE7F9
oklch(93.7% 0.025 298.6)
-
Step 200
200
#DDD3F5
oklch(88.5% 0.047 298.9)
-
Step 300
300
#C7B5F1
oklch(80.9% 0.085 298.2)
-
Step 400
400
#AC8CEA
oklch(70.7% 0.137 298.5)
-
Step 500
500
#996DE3
oklch(63.2% 0.174 298.5)
-
Step 600
600
#8451D1
oklch(55.6% 0.189 298.4)
-
Step 700
700
#7040B5
oklch(49.1% 0.177 298.5)
-
Step 800
800 (this color)
#5A3591
oklch(42.3% 0.146 298.5)
-
Step 900
900
#4A3075
oklch(37.7% 0.114 298.1)
-
Step 950
950
#2B1D44
oklch(27% 0.071 298)
#5A3591 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) | #004A94 | 0.105 |
| Deuteranopia (no green cones) | #0C498F | 0.102 |
| Tritanopia (no blue cones) | #4D495E | 0.111 |
| Achromatopsia (no color) | #4A4A4A | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A3591
#5A3591
oklch(42.3% 0.146 298.5)
- #495500
#495500
oklch(42.4% 0.099 118.7)
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 #5A3591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.026
- Dark Slate Blue #483D8B ΔE 0.037
- Blueberry #464196 ΔE 0.043
- Chrysanthemum #560BAD ΔE 0.074
- Twilight #4E518B ΔE 0.074
- Imperial Purple #480CA8 ΔE 0.082
- Blue With A Hint Of Purple #533CC6 ΔE 0.088
- Grape #7209B7 ΔE 0.088
Use #5A3591 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.