#5B417C
Closest named color: Dark Slate Blue (#483D8B). oklch(43.1% 0.098 302.8), rgb(91, 65, 124).
Aa
White text reads best on this color (8.42:1).
About this color
#5B417C is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.098 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 8.42:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.49:1 |
| White text | 8.42:1 |
Values
| HEX | #5B417C |
| RGB | rgb(91, 65, 124) |
| HSL | hsl(266, 31%, 37%) |
| OKLCH | oklch(43.1% 0.098 302.8) |
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 #5B417C | 8.42:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #5B417C | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #5B417C text on white | 8.42:1 | AAA | Lc 88.9 | Fine for body text |
| #5B417C text on black | 2.49:1 | Fails | Lc -13.3 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DDD4EB
oklch(88.4% 0.033 303.4)
-
Step 300
300
#C8B8E0
oklch(80.9% 0.058 303.3)
-
Step 400
400
#AC93D0
oklch(70.8% 0.091 302.9)
-
Step 500
500
#9877C4
oklch(63.2% 0.118 302.9)
-
Step 600
600
#835EB0
oklch(55.6% 0.128 303.3)
-
Step 700
700
#6E4E97
oklch(49.1% 0.117 302.5)
-
Step 800
800 (this color)
#5B417C
oklch(43.1% 0.098 302.8)
-
Step 900
900
#4A3763
oklch(37.8% 0.076 302.8)
-
Step 950
950
#2B203A
oklch(26.9% 0.049 302.7)
#5B417C 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) | #314D7E | 0.068 |
| Deuteranopia (no green cones) | #374D7A | 0.063 |
| Tritanopia (no blue cones) | #554B58 | 0.075 |
| Achromatopsia (no color) | #4D4D4D | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B417C
#5B417C
oklch(43.1% 0.098 302.8)
- #46580D
#46580D
oklch(43% 0.098 122.9)
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 #5B417C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Twilight #4E518B ΔE 0.048
- Dusk #4E5481 ΔE 0.054
- Blueberry #464196 ΔE 0.056
- Rebecca Purple #663399 ΔE 0.063
- Dusty Grape #545775 ΔE 0.067
- YInMn Blue #415A77 ΔE 0.081
- Denim Blue #3B5B92 ΔE 0.082
Use #5B417C 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.