#5B428D
Closest named color: Dark Slate Blue (#483D8B). oklch(44.3% 0.12 296.6), rgb(91, 66, 141).
Aa
White text reads best on this color (8.04:1).
About this color
#5B428D is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.120 and its hue 297°. 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 8.04:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.60:1 |
| White text | 8.04:1 |
Values
| HEX | #5B428D |
| RGB | rgb(91, 66, 141) |
| HSL | hsl(260, 36%, 41%) |
| OKLCH | oklch(44.3% 0.12 296.6) |
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 #5B428D | 8.04:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #5B428D | 2.60:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #5B428D text on white | 8.04:1 | AAA | Lc 87.7 | Fine for body text |
| #5B428D text on black | 2.60:1 | 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
#C5B8E9
oklch(81% 0.07 297)
-
Step 400
400
#A791DE
oklch(70.6% 0.112 296.5)
-
Step 500
500
#9374D5
oklch(63% 0.144 296.8)
-
Step 600
600
#7E5BC2
oklch(55.6% 0.155 296.7)
-
Step 700
700
#6A4AA8
oklch(49.1% 0.145 296.3)
-
Step 800
800 (this color)
#5B428D
oklch(44.3% 0.12 296.6)
-
Step 900
900
#47356D
oklch(37.7% 0.094 296.4)
-
Step 950
950
#291F40
oklch(26.9% 0.061 296)
#5B428D 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) | #255090 | 0.078 |
| Deuteranopia (no green cones) | #2B4F8B | 0.073 |
| Tritanopia (no blue cones) | #505161 | 0.095 |
| Achromatopsia (no color) | #505050 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B428D
#5B428D
oklch(44.3% 0.12 296.6)
- #505A00
#505A00
oklch(44.3% 0.102 117)
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 #5B428D, 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 0.044
- Twilight #4E518B ΔE 0.044
- Dusk #4E5481 ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.077
- Dusty Grape #545775 ΔE 0.078
- Dusky Blue #475F94 ΔE 0.080
Use #5B428D 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.