#503C74
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.093 298.6), rgb(80, 60, 116).
Aa
White text reads best on this color (9.37:1).
About this color
#503C74 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.093 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 9.37:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.23:1 |
| White text | 9.37:1 |
Values
| HEX | #503C74 |
| RGB | rgb(80, 60, 116) |
| HSL | hsl(261, 32%, 35%) |
| OKLCH | oklch(40.5% 0.093 298.6) |
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 #503C74 | 9.37:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #503C74 | 2.23:1 | Fails | Lc 12.4 | Not readable |
| #503C74 text on white | 9.37:1 | AAA | Lc 91.5 | Preferred for body text |
| #503C74 text on black | 2.23:1 | Fails | Lc -10.8 | 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 800.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD5EB
oklch(88.4% 0.031 298.2)
-
Step 300
300
#C5BAE0
oklch(81% 0.054 298.4)
-
Step 400
400
#A795D0
oklch(70.7% 0.087 298.2)
-
Step 500
500
#927AC4
oklch(63.1% 0.111 298.1)
-
Step 600
600
#7D62B0
oklch(55.7% 0.12 298.4)
-
Step 700
700
#6A5097
oklch(49.1% 0.113 299.1)
-
Step 800
800 (this color)
#503C74
oklch(40.5% 0.093 298.6)
-
Step 900
900
#473863
oklch(37.7% 0.074 298.9)
-
Step 950
950
#29213A
oklch(26.9% 0.047 297.9)
#503C74 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) | #2B4676 | 0.059 |
| Deuteranopia (no green cones) | #2F4673 | 0.055 |
| Tritanopia (no blue cones) | #494652 | 0.073 |
| Achromatopsia (no color) | #464646 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503C74
#503C74
oklch(40.5% 0.093 298.6)
- #444F03
#444F03
oklch(40.4% 0.093 118.6)
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 #503C74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Blueberry #464196 ΔE 0.058
- Twilight #4E518B ΔE 0.063
- Dusk #4E5481 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.077
- Dusty Grape #545775 ΔE 0.079
- Cobalt #1E488F ΔE 0.080
- Dark Grey Blue #29465B ΔE 0.082
Use #503C74 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.