#563B91
Closest named color: Dark Slate Blue (#483D8B). oklch(42.9% 0.136 294.4), rgb(86, 59, 145).
Aa
White text reads best on this color (8.64:1).
About this color
#563B91 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.136 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.026 away. White text reads best on it, at 8.64:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.64:1 |
Values
| HEX | #563B91 |
| RGB | rgb(86, 59, 145) |
| HSL | hsl(259, 42%, 40%) |
| OKLCH | oklch(42.9% 0.136 294.4) |
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 #563B91 | 8.64:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #563B91 | 2.43:1 | Fails | Lc 14.6 | Not readable |
| #563B91 text on white | 8.64:1 | AAA | Lc 89.3 | Fine for body text |
| #563B91 text on black | 2.43:1 | Fails | Lc -12.9 | 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
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F4
oklch(88.5% 0.044 294.1)
-
Step 300
300
#C3B7EF
oklch(80.8% 0.079 294.4)
-
Step 400
400
#A690E8
oklch(70.8% 0.127 294.4)
-
Step 500
500
#9172E0
oklch(63.1% 0.161 294.3)
-
Step 600
600
#7C57CE
oklch(55.6% 0.176 294.3)
-
Step 700
700
#6946B2
oklch(49% 0.164 294.5)
-
Step 800
800 (this color)
#563B91
oklch(42.9% 0.136 294.4)
-
Step 900
900
#463373
oklch(37.6% 0.106 294.4)
-
Step 950
950
#291F43
oklch(27.1% 0.065 294.4)
#563B91 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) | #074C94 | 0.091 |
| Deuteranopia (no green cones) | #154A8F | 0.086 |
| Tritanopia (no blue cones) | #474E60 | 0.109 |
| Achromatopsia (no color) | #4C4C4C | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #563B91
#563B91
oklch(42.9% 0.136 294.4)
- #4F5500
#4F5500
oklch(42.9% 0.097 114.4)
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 #563B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.026
- Blueberry #464196 ΔE 0.030
- Rebecca Purple #663399 ΔE 0.035
- Twilight #4E518B ΔE 0.060
- Dusk #4E5481 ΔE 0.076
- Cobalt #1E488F ΔE 0.079
- Chrysanthemum #560BAD ΔE 0.083
- Blue With A Hint Of Purple #533CC6 ΔE 0.085
Use #563B91 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.