#584B9D
Closest named color: Twilight (#4E518B). oklch(46.8% 0.128 287.7), rgb(88, 75, 157).
Aa
White text reads best on this color (7.22:1).
About this color
#584B9D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.128 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.039 away. White text reads best on it, at 7.22:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #584B9D |
| RGB | rgb(88, 75, 157) |
| HSL | hsl(250, 35%, 45%) |
| OKLCH | oklch(46.8% 0.128 287.7) |
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 #584B9D | 7.22:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #584B9D | 2.90:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #584B9D text on white | 7.22:1 | AAA | Lc 84.9 | Fine for body text |
| #584B9D text on black | 2.90:1 | Fails | Lc -17.1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BEBBE7
oklch(80.9% 0.062 288.1)
-
Step 400
400
#9D97DB
oklch(70.7% 0.098 287.6)
-
Step 500
500
#867CD2
oklch(63.2% 0.127 287.5)
-
Step 600
600
#7063BF
oklch(55.6% 0.139 287.5)
-
Step 700
700 (this color)
#584B9D
oklch(46.8% 0.128 287.7)
-
Step 800
800
#4D4385
oklch(42.6% 0.106 288)
-
Step 900
900
#40396B
oklch(37.7% 0.084 288.1)
-
Step 950
950
#25223F
oklch(27.1% 0.053 287)
#584B9D 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) | #2759A0 | 0.066 |
| Deuteranopia (no green cones) | #26559B | 0.065 |
| Tritanopia (no blue cones) | #435C6D | 0.106 |
| Achromatopsia (no color) | #575757 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #584B9D
#584B9D
oklch(46.8% 0.128 287.7)
- #605E00
#605E00
oklch(46.8% 0.101 108.3)
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 #584B9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.039
- Blueberry #464196 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.054
- Rebecca Purple #663399 ΔE 0.058
- Dusk #4E5481 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.061
- Dusky Blue #475F94 ΔE 0.062
- Iris #6258C4 ΔE 0.069
Use #584B9D 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.