#504B81
Closest named color: Twilight (#4E518B). oklch(44.3% 0.087 286.5), rgb(80, 75, 129).
Aa
White text reads best on this color (7.88:1).
About this color
#504B81 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.087 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.021 away. White text reads best on it, at 7.88:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #504B81 |
| RGB | rgb(80, 75, 129) |
| HSL | hsl(246, 26%, 40%) |
| OKLCH | oklch(44.3% 0.087 286.5) |
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 #504B81 | 7.88:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #504B81 | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #504B81 text on white | 7.88:1 | AAA | Lc 87.3 | Fine for body text |
| #504B81 text on black | 2.66:1 | Fails | Lc -14.9 | 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 800.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F4
oklch(93.7% 0.015 286.1)
-
Step 200
200
#D7D7EC
oklch(88.6% 0.029 285.8)
-
Step 300
300
#BDBCE1
oklch(80.8% 0.052 286.4)
-
Step 400
400
#9C99D2
oklch(70.6% 0.083 286.5)
-
Step 500
500
#857FC6
oklch(63.1% 0.105 286.8)
-
Step 600
600
#6F68B2
oklch(55.7% 0.113 286.5)
-
Step 700
700
#5D5699
oklch(49.1% 0.105 286.6)
-
Step 800
800 (this color)
#504B81
oklch(44.3% 0.087 286.5)
-
Step 900
900
#3F3C64
oklch(37.8% 0.067 286.1)
-
Step 950
950
#25233A
oklch(27% 0.042 287.2)
#504B81 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) | #395383 | 0.037 |
| Deuteranopia (no green cones) | #385080 | 0.036 |
| Tritanopia (no blue cones) | #435560 | 0.073 |
| Achromatopsia (no color) | #515151 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B81
#504B81
oklch(44.3% 0.087 286.5)
- #595610
#595610
oklch(44.2% 0.087 106.9)
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 #504B81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.021
- Dusk #4E5481 ΔE 0.026
- Dusty Grape #545775 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.047
- Blueberry #464196 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.054
- Dusk Blue #26538D ΔE 0.055
Use #504B81 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.