#503B66
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.075 305.7), rgb(80, 59, 102).
Aa
White text reads best on this color (9.72:1).
About this color
#503B66 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.075 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.063 away. White text reads best on it, at 9.72:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.15:1 |
| White text | 9.72:1 |
Values
| HEX | #503B66 |
| RGB | rgb(80, 59, 102) |
| HSL | hsl(269, 27%, 32%) |
| OKLCH | oklch(39.4% 0.075 305.7) |
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 #503B66 | 9.72:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #503B66 | 2.15:1 | Fails | Lc 11.5 | Not readable |
| #503B66 text on white | 9.72:1 | AAA | Lc 92.5 | Preferred for body text |
| #503B66 text on black | 2.15:1 | Fails | Lc -10.0 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DED4EA
oklch(88.5% 0.032 306.2)
-
Step 300
300
#C9B8DE
oklch(80.9% 0.056 305.4)
-
Step 400
400
#AE92CD
oklch(70.6% 0.09 305.9)
-
Step 500
500
#9A76C0
oklch(63% 0.115 305.7)
-
Step 600
600
#855EAD
oklch(55.6% 0.125 305.5)
-
Step 700
700
#714D94
oklch(49.1% 0.116 306)
-
Step 800
800
#5C4078
oklch(42.8% 0.095 305.8)
-
Step 900
900 (this color)
#503B66
oklch(39.4% 0.075 305.7)
-
Step 950
950
#2C2039
oklch(27% 0.048 305.5)
#503B66 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) | #314368 | 0.052 |
| Deuteranopia (no green cones) | #364465 | 0.048 |
| Tritanopia (no blue cones) | #4D424B | 0.057 |
| Achromatopsia (no color) | #444444 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503B66
#503B66
oklch(39.4% 0.075 305.7)
- #3C4D1D
#3C4D1D
oklch(39.4% 0.075 125.9)
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 #503B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.071
- Dusk #4E5481 ΔE 0.075
- Twilight #4E518B ΔE 0.078
- Purple Brown #673A3F ΔE 0.078
- Charcoal Grey #3C4142 ΔE 0.079
- Blueberry #464196 ΔE 0.081
- Dusty Grape #545775 ΔE 0.081
Use #503B66 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.