#504B8D
Closest named color: Twilight (#4E518B). oklch(45% 0.106 284.8), rgb(80, 75, 141).
Aa
White text reads best on this color (7.68:1).
About this color
#504B8D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.106 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.018 away. White text reads best on it, at 7.68:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #504B8D |
| RGB | rgb(80, 75, 141) |
| HSL | hsl(245, 31%, 42%) |
| OKLCH | oklch(45% 0.106 284.8) |
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 #504B8D | 7.68:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #504B8D | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #504B8D text on white | 7.68:1 | AAA | Lc 86.6 | Fine for body text |
| #504B8D text on black | 2.73:1 | Fails | Lc -15.5 | 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
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D6D7F0
oklch(88.6% 0.034 283.9)
-
Step 300
300
#BCBCE8
oklch(81% 0.062 284.9)
-
Step 400
400
#9A98DC
oklch(70.7% 0.099 284.9)
-
Step 500
500
#827DD2
oklch(63.1% 0.126 284.9)
-
Step 600
600
#6C65BF
oklch(55.6% 0.136 284.6)
-
Step 700
700
#5B53A5
oklch(49.1% 0.127 285.1)
-
Step 800
800 (this color)
#504B8D
oklch(45% 0.106 284.8)
-
Step 900
900
#3D3A6B
oklch(37.6% 0.082 284.5)
-
Step 950
950
#24223F
oklch(27% 0.053 285.4)
#504B8D 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) | #32558F | 0.045 |
| Deuteranopia (no green cones) | #30518B | 0.045 |
| Tritanopia (no blue cones) | #3E5865 | 0.089 |
| Achromatopsia (no color) | #535353 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B8D
#504B8D
oklch(45% 0.106 284.8)
- #5E5700
#5E5700
oklch(44.9% 0.095 104.2)
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 #504B8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.018
- Dusk #4E5481 ΔE 0.036
- Blueberry #464196 ΔE 0.037
- 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
- Light Navy Blue #2E5A88 ΔE 0.059
Use #504B8D 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.