#503370
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.104 303.9), rgb(80, 51, 112).
Aa
White text reads best on this color (10.25:1).
About this color
#503370 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.104 and its hue 304°. 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 10.25:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.25:1 |
Values
| HEX | #503370 |
| RGB | rgb(80, 51, 112) |
| HSL | hsl(269, 37%, 32%) |
| OKLCH | oklch(38.5% 0.104 303.9) |
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 #503370 | 10.25:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #503370 | 2.04:1 | Fails | Lc 10.4 | Not readable |
| #503370 text on white | 10.25:1 | AAA | Lc 93.6 | Preferred for body text |
| #503370 text on black | 2.04:1 | Fails | Lc -8.9 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EDE6F6
oklch(93.5% 0.023 305.6)
-
Step 200
200
#DFD3F1
oklch(88.6% 0.043 303.7)
-
Step 300
300
#CBB5EA
oklch(80.9% 0.077 303.6)
-
Step 400
400
#B18CDF
oklch(70.6% 0.124 303.9)
-
Step 500
500
#9F6DD6
oklch(63.1% 0.159 304.2)
-
Step 600
600
#8A52C4
oklch(55.6% 0.174 303.9)
-
Step 700
700
#7542A9
oklch(49.1% 0.161 303.9)
-
Step 800
800
#5F3789
oklch(42.6% 0.133 303.8)
-
Step 900
900 (this color)
#503370
oklch(38.5% 0.104 303.9)
-
Step 950
950
#2D1D40
oklch(26.9% 0.065 303.4)
#503370 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) | #1F4072 | 0.077 |
| Deuteranopia (no green cones) | #28416F | 0.070 |
| Tritanopia (no blue cones) | #4A3E4C | 0.077 |
| Achromatopsia (no color) | #414141 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503370
#503370
oklch(38.5% 0.104 303.9)
- #394C00
#394C00
oklch(38.6% 0.096 124.4)
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 #503370, 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
- Blueberry #464196 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.079
- Grape Purple #5D1451 ΔE 0.080
- Twilight #4E518B ΔE 0.086
- Indigo #4B0082 ΔE 0.089
- Royal Purple #4B006E ΔE 0.089
- Dusk #4E5481 ΔE 0.090
Use #503370 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.