#504B8B
Closest named color: Twilight (#4E518B). oklch(44.9% 0.103 285), rgb(80, 75, 139).
Aa
White text reads best on this color (7.71:1).
About this color
#504B8B is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.103 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.017 away. White text reads best on it, at 7.71:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.72:1 |
| White text | 7.71:1 |
Values
| HEX | #504B8B |
| RGB | rgb(80, 75, 139) |
| HSL | hsl(245, 30%, 42%) |
| OKLCH | oklch(44.9% 0.103 285) |
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 #504B8B | 7.71:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #504B8B | 2.72:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #504B8B text on white | 7.71:1 | AAA | Lc 86.7 | Fine for body text |
| #504B8B text on black | 2.72:1 | Fails | Lc -15.4 | 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 800.
-
Step 50
50
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F5
oklch(93.5% 0.017 286.1)
-
Step 200
200
#D6D7EF
oklch(88.6% 0.033 283.8)
-
Step 300
300
#BCBCE7
oklch(81% 0.06 285)
-
Step 400
400
#9A98DA
oklch(70.6% 0.096 285.1)
-
Step 500
500
#827DD0
oklch(63% 0.123 285)
-
Step 600
600
#6D65BD
oklch(55.6% 0.133 285.3)
-
Step 700
700
#5B54A3
oklch(49.2% 0.123 284.9)
-
Step 800
800 (this color)
#504B8B
oklch(44.9% 0.103 285)
-
Step 900
900
#3E3A6A
oklch(37.6% 0.081 285.6)
-
Step 950
950
#24223E
oklch(26.9% 0.051 285.7)
#504B8B 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) | #33558D | 0.044 |
| Deuteranopia (no green cones) | #31518A | 0.043 |
| Tritanopia (no blue cones) | #3F5864 | 0.088 |
| Achromatopsia (no color) | #535353 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B8B
#504B8B
oklch(44.9% 0.103 285)
- #5D5700
#5D5700
oklch(44.8% 0.095 105)
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 #504B8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.017
- Dusk #4E5481 ΔE 0.033
- Blueberry #464196 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.049
- Dusk Blue #26538D ΔE 0.054
- Dusky Blue #475F94 ΔE 0.055
- Dusty Grape #545775 ΔE 0.057
Use #504B8B 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.