#50387B
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.11 297.8), rgb(80, 56, 123).
Aa
White text reads best on this color (9.57:1).
About this color
#50387B is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.110 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 0.031 away. White text reads best on it, at 9.57:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #50387B |
| RGB | rgb(80, 56, 123) |
| HSL | hsl(261, 37%, 35%) |
| OKLCH | oklch(40.2% 0.11 297.8) |
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 #50387B | 9.57:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #50387B | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #50387B text on white | 9.57:1 | AAA | Lc 92.0 | Preferred for body text |
| #50387B text on black | 2.19:1 | Fails | Lc -10.4 | 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 900.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F4
oklch(88.4% 0.046 297.9)
-
Step 300
300
#C6B6F0
oklch(80.9% 0.082 297.2)
-
Step 400
400
#AB8DE8
oklch(70.7% 0.133 298.1)
-
Step 500
500
#976EE1
oklch(63.1% 0.169 297.8)
-
Step 600
600
#8253CF
oklch(55.6% 0.184 297.6)
-
Step 700
700
#6E42B3
oklch(49% 0.172 297.6)
-
Step 800
800
#5A3891
oklch(42.8% 0.141 297.7)
-
Step 900
900 (this color)
#50387B
oklch(40.2% 0.11 297.8)
-
Step 950
950
#2B1D44
oklch(27% 0.071 298)
#50387B 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) | #1E457D | 0.074 |
| Deuteranopia (no green cones) | #254479 | 0.068 |
| Tritanopia (no blue cones) | #474554 | 0.085 |
| Achromatopsia (no color) | #454545 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #50387B
#50387B
oklch(40.2% 0.11 297.8)
- #444E00
#444E00
oklch(40.1% 0.093 117.8)
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 #50387B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Blueberry #464196 ΔE 0.050
- Rebecca Purple #663399 ΔE 0.065
- Twilight #4E518B ΔE 0.068
- Dusk #4E5481 ΔE 0.076
- Cobalt #1E488F ΔE 0.079
- Twilight Blue #0A437A ΔE 0.086
- Dusk Blue #26538D ΔE 0.087
Use #50387B 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.