#50278A
Closest named color: Dark Slate Blue (#483D8B). oklch(38.6% 0.155 297.6), rgb(80, 39, 138).
Aa
White text reads best on this color (10.50:1).
About this color
#50278A is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.155 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.050 away. White text reads best on it, at 10.50:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.99:1 |
| White text | 10.50:1 |
Values
| HEX | #50278A |
| RGB | rgb(80, 39, 138) |
| HSL | hsl(265, 56%, 35%) |
| OKLCH | oklch(38.6% 0.155 297.6) |
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 #50278A | 10.50:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #50278A | 1.99:1 | Fails | Lc 10.2 | Not readable |
| #50278A text on white | 10.50:1 | AAA | Lc 93.7 | Preferred for body text |
| #50278A text on black | 1.99:1 | Fails | Lc -8.8 | 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 900.
-
Step 50
50
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE6FE
oklch(93.7% 0.033 297.2)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C9B1FF
oklch(80.9% 0.111 298)
-
Step 400
400
#AE84FF
oklch(70.6% 0.177 297.4)
-
Step 500
500
#9D5DFF
oklch(63.1% 0.229 297.6)
-
Step 600
600
#8A34F3
oklch(55.6% 0.259 297.4)
-
Step 700
700
#7623D3
oklch(49.1% 0.24 297.6)
-
Step 800
800
#6021AB
oklch(42.7% 0.2 297.7)
-
Step 900
900 (this color)
#50278A
oklch(38.6% 0.155 297.6)
-
Step 950
950
#2D174F
oklch(27% 0.098 297.5)
#50278A 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) | #003F8D | 0.101 |
| Deuteranopia (no green cones) | #003E88 | 0.102 |
| Tritanopia (no blue cones) | #423F55 | 0.118 |
| Achromatopsia (no color) | #3F3F3F | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #50278A
#50278A
oklch(38.6% 0.155 297.6)
- #404A00
#404A00
oklch(38.7% 0.09 118.2)
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 #50278A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.050
- Indigo #4B0082 ΔE 0.054
- Rebecca Purple #663399 ΔE 0.057
- Blueberry #464196 ΔE 0.061
- Imperial Purple #480CA8 ΔE 0.062
- Chrysanthemum #560BAD ΔE 0.063
- Royal Purple #4B006E ΔE 0.075
- Indigo Blue #3A18B1 ΔE 0.082
Use #50278A 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.