#5B428E
Closest named color: Dark Slate Blue (#483D8B). oklch(44.4% 0.121 296.3), rgb(91, 66, 142).
Aa
White text reads best on this color (8.03:1).
About this color
#5B428E is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.121 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 8.03:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #5B428E |
| RGB | rgb(91, 66, 142) |
| HSL | hsl(260, 37%, 41%) |
| OKLCH | oklch(44.4% 0.121 296.3) |
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 #5B428E | 8.03:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #5B428E | 2.61:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #5B428E text on white | 8.03:1 | AAA | Lc 87.6 | Fine for body text |
| #5B428E text on black | 2.61:1 | Fails | Lc -14.5 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DBD4F1
oklch(88.4% 0.04 296.6)
-
Step 300
300
#C4B8EA
oklch(80.9% 0.071 295.8)
-
Step 400
400
#A791DF
oklch(70.6% 0.114 296.3)
-
Step 500
500
#9374D6
oklch(63.1% 0.145 296.6)
-
Step 600
600
#7E5BC3
oklch(55.7% 0.157 296.5)
-
Step 700
700
#6A4AA9
oklch(49.1% 0.147 296.1)
-
Step 800
800 (this color)
#5B428E
oklch(44.4% 0.121 296.3)
-
Step 900
900
#47356D
oklch(37.7% 0.094 296.4)
-
Step 950
950
#291F40
oklch(26.9% 0.061 296)
#5B428E 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) | #245191 | 0.079 |
| Deuteranopia (no green cones) | #2A4F8C | 0.074 |
| Tritanopia (no blue cones) | #4F5161 | 0.097 |
| Achromatopsia (no color) | #505050 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B428E
#5B428E
oklch(44.4% 0.121 296.3)
- #515A00
#515A00
oklch(44.4% 0.102 116.3)
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 #5B428E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Blueberry #464196 ΔE 0.039
- Rebecca Purple #663399 ΔE 0.043
- Twilight #4E518B ΔE 0.044
- Dusk #4E5481 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.077
- Dusty Grape #545775 ΔE 0.079
- Dusky Blue #475F94 ΔE 0.080
Use #5B428E 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.