#50378E
Closest named color: Dark Slate Blue (#483D8B). oklch(41.4% 0.138 292.6), rgb(80, 55, 142).
Aa
White text reads best on this color (9.21:1).
About this color
#50378E is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.138 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.020 away. White text reads best on it, at 9.21:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #50378E |
| RGB | rgb(80, 55, 142) |
| HSL | hsl(257, 44%, 39%) |
| OKLCH | oklch(41.4% 0.138 292.6) |
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 #50378E | 9.21:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #50378E | 2.27:1 | Fails | Lc 13.1 | Not readable |
| #50378E text on white | 9.21:1 | AAA | Lc 90.9 | Preferred for body text |
| #50378E text on black | 2.27:1 | Fails | Lc -11.4 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F5
oklch(88.4% 0.045 292.4)
-
Step 300
300
#C2B8F1
oklch(81% 0.08 292.6)
-
Step 400
400
#A390EA
oklch(70.6% 0.13 292.4)
-
Step 500
500
#8E72E3
oklch(63.1% 0.165 292.4)
-
Step 600
600
#7A58D1
oklch(55.7% 0.179 292.6)
-
Step 700
700
#6747B5
oklch(49.2% 0.166 292.6)
-
Step 800
800 (this color)
#50378E
oklch(41.4% 0.138 292.6)
-
Step 900
900
#453475
oklch(37.9% 0.107 292.6)
-
Step 950
950
#281F44
oklch(27% 0.067 292.5)
#50378E 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) | #004991 | 0.088 |
| Deuteranopia (no green cones) | #02468C | 0.087 |
| Tritanopia (no blue cones) | #3F4A5D | 0.109 |
| Achromatopsia (no color) | #484848 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #50378E
#50378E
oklch(41.4% 0.138 292.6)
- #4C5000
#4C5000
oklch(41.4% 0.092 113.1)
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 #50378E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.020
- Blueberry #464196 ΔE 0.030
- Rebecca Purple #663399 ΔE 0.045
- Twilight #4E518B ΔE 0.069
- Cobalt #1E488F ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.078
- Imperial Purple #480CA8 ΔE 0.079
- Sapphire #2138AB ΔE 0.083
Use #50378E 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.