#504F91
Closest named color: Twilight (#4E518B). oklch(46.1% 0.105 282.1), rgb(80, 79, 145).
Aa
White text reads best on this color (7.32:1).
About this color
#504F91 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.105 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.013 away. White text reads best on it, at 7.32:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #504F91 |
| RGB | rgb(80, 79, 145) |
| HSL | hsl(241, 29%, 44%) |
| OKLCH | oklch(46.1% 0.105 282.1) |
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 #504F91 | 7.32:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #504F91 | 2.86:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #504F91 text on white | 7.32:1 | AAA | Lc 85.3 | Fine for body text |
| #504F91 text on black | 2.86:1 | Fails | Lc -16.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D6D7EC
oklch(88.5% 0.029 283.6)
-
Step 300
300
#BBBDE1
oklch(80.9% 0.051 282.7)
-
Step 400
400
#989BD3
oklch(70.8% 0.082 281.7)
-
Step 500
500
#8081C7
oklch(63.1% 0.104 282.4)
-
Step 600
600
#6A6AB4
oklch(55.8% 0.113 282.1)
-
Step 700
700 (this color)
#504F91
oklch(46.1% 0.105 282.1)
-
Step 800
800
#48487D
oklch(42.7% 0.087 282.1)
-
Step 900
900
#3C3D65
oklch(37.8% 0.068 281.6)
-
Step 950
950
#23243B
oklch(27.1% 0.043 281.2)
#504F91 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) | #365993 | 0.041 |
| Deuteranopia (no green cones) | #32548F | 0.040 |
| Tritanopia (no blue cones) | #3B5D69 | 0.092 |
| Achromatopsia (no color) | #565656 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504F91
#504F91
oklch(46.1% 0.105 282.1)
- #635A00
#635A00
oklch(46.2% 0.097 102.7)
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 #504F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.013
- Dusk #4E5481 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.041
- Blueberry #464196 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.051
- Dusk Blue #26538D ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.054
Use #504F91 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.