#56428B
Closest named color: Dark Slate Blue (#483D8B). oklch(43.7% 0.117 293.6), rgb(86, 66, 139).
Aa
White text reads best on this color (8.24:1).
About this color
#56428B is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.117 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 0.029 away. White text reads best on it, at 8.24:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.54:1 |
| White text | 8.24:1 |
Values
| HEX | #56428B |
| RGB | rgb(86, 66, 139) |
| HSL | hsl(256, 36%, 40%) |
| OKLCH | oklch(43.7% 0.117 293.6) |
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 #56428B | 8.24:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #56428B | 2.54:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #56428B text on white | 8.24:1 | AAA | Lc 88.3 | Fine for body text |
| #56428B text on black | 2.54:1 | Fails | Lc -13.9 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C2B9E9
oklch(80.9% 0.068 293.4)
-
Step 400
400
#A493DE
oklch(70.7% 0.109 293.8)
-
Step 500
500
#8E77D5
oklch(63.1% 0.139 293.3)
-
Step 600
600
#795DC2
oklch(55.5% 0.152 293.6)
-
Step 700
700
#664CA8
oklch(49% 0.142 293.5)
-
Step 800
800 (this color)
#56428B
oklch(43.7% 0.117 293.6)
-
Step 900
900
#45366D
oklch(37.7% 0.092 294.1)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#56428B 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) | #254F8E | 0.070 |
| Deuteranopia (no green cones) | #294D89 | 0.066 |
| Tritanopia (no blue cones) | #495160 | 0.095 |
| Achromatopsia (no color) | #4F4F4F | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #56428B
#56428B
oklch(43.7% 0.117 293.6)
- #525700
#525700
oklch(43.7% 0.098 113.6)
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 #56428B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.029
- Blueberry #464196 ΔE 0.033
- Twilight #4E518B ΔE 0.041
- Rebecca Purple #663399 ΔE 0.049
- Dusk #4E5481 ΔE 0.056
- Dusk Blue #26538D ΔE 0.073
- Denim Blue #3B5B92 ΔE 0.073
- Cobalt #1E488F ΔE 0.074
Use #56428B 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.