#5A3878
Closest named color: Dark Slate Blue (#483D8B). oklch(41.1% 0.108 306.8), rgb(90, 56, 120).
Aa
White text reads best on this color (9.24:1).
About this color
#5A3878 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.108 and its hue 307°. 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 9.24:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #5A3878 |
| RGB | rgb(90, 56, 120) |
| HSL | hsl(272, 36%, 35%) |
| OKLCH | oklch(41.1% 0.108 306.8) |
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 #5A3878 | 9.24:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #5A3878 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #5A3878 text on white | 9.24:1 | AAA | Lc 91.1 | Preferred for body text |
| #5A3878 text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F4
oklch(93.6% 0.018 306.7)
-
Step 200
200
#DFD4EC
oklch(88.6% 0.035 306.3)
-
Step 300
300
#CBB6E1
oklch(80.8% 0.064 307.1)
-
Step 400
400
#B190D2
oklch(70.7% 0.1 306.9)
-
Step 500
500
#9E73C6
oklch(63.1% 0.129 306.9)
-
Step 600
600
#895AB3
oklch(55.7% 0.14 306.8)
-
Step 700
700
#74499A
oklch(49.1% 0.131 306.7)
-
Step 800
800 (this color)
#5A3878
oklch(41.1% 0.108 306.8)
-
Step 900
900
#4D3464
oklch(37.6% 0.084 306.8)
-
Step 950
950
#2D1F3B
oklch(27% 0.054 306.2)
#5A3878 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) | #25467A | 0.085 |
| Deuteranopia (no green cones) | #2F4876 | 0.077 |
| Tritanopia (no blue cones) | #554352 | 0.079 |
| Achromatopsia (no color) | #474747 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A3878
#5A3878
oklch(41.1% 0.108 306.8)
- #3B5400
#3B5400
oklch(41% 0.106 126.8)
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 #5A3878, 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
- Rebecca Purple #663399 ΔE 0.060
- Blueberry #464196 ΔE 0.061
- Twilight #4E518B ΔE 0.069
- Dusk #4E5481 ΔE 0.076
- Dusty Grape #545775 ΔE 0.088
- Grape Purple #5D1451 ΔE 0.093
- Cobalt #1E488F ΔE 0.094
Use #5A3878 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.