#5B409C
Closest named color: Rebecca Purple (#663399). oklch(45% 0.144 293.3), rgb(91, 64, 156).
Aa
White text reads best on this color (7.89:1).
About this color
#5B409C is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.144 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.033 away. White text reads best on it, at 7.89:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.65:1 |
| White text | 7.89:1 |
Values
| HEX | #5B409C |
| RGB | rgb(91, 64, 156) |
| HSL | hsl(258, 42%, 43%) |
| OKLCH | oklch(45% 0.144 293.3) |
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 #5B409C | 7.89:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #5B409C | 2.65:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #5B409C text on white | 7.89:1 | AAA | Lc 87.1 | Fine for body text |
| #5B409C text on black | 2.65:1 | Fails | Lc -15.0 | Dividers and decoration only |
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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F6
oklch(88.5% 0.047 293.5)
-
Step 300
300
#C2B7F2
oklch(80.9% 0.083 293)
-
Step 400
400
#A58FEC
oklch(70.7% 0.134 293.5)
-
Step 500
500
#9070E6
oklch(63.1% 0.172 293.3)
-
Step 600
600
#7B55D4
oklch(55.6% 0.187 293.1)
-
Step 700
700
#6844B8
oklch(49% 0.174 293.2)
-
Step 800
800 (this color)
#5B409C
oklch(45% 0.144 293.3)
-
Step 900
900
#463276
oklch(37.7% 0.112 293.9)
-
Step 950
950
#291E45
oklch(27% 0.071 294.2)
#5B409C 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) | #06529F | 0.094 |
| Deuteranopia (no green cones) | #14509A | 0.089 |
| Tritanopia (no blue cones) | #4A5467 | 0.116 |
| Achromatopsia (no color) | #515151 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B409C
#5B409C
oklch(45% 0.144 293.3)
- #565B00
#565B00
oklch(45.1% 0.101 113.4)
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 #5B409C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.033
- Blueberry #464196 ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.044
- Twilight #4E518B ΔE 0.058
- Bluey Purple #6241C7 ΔE 0.069
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Dusk #4E5481 ΔE 0.076
- Blurple #5539CC ΔE 0.079
Use #5B409C 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.