#584F9B
Closest named color: Twilight (#4E518B). oklch(47.4% 0.119 286.3), rgb(88, 79, 155).
Aa
White text reads best on this color (6.98:1).
About this color
#584F9B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.119 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.032 away. White text reads best on it, at 6.98:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #584F9B |
| RGB | rgb(88, 79, 155) |
| HSL | hsl(247, 32%, 46%) |
| OKLCH | oklch(47.4% 0.119 286.3) |
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 #584F9B | 6.98:1 | AA | Lc -89.0 | Fine for body text |
| Black text on #584F9B | 3.00:1 | AA large text | Lc 20.0 | Dividers and decoration only |
| #584F9B text on white | 6.98:1 | AA | Lc 84.0 | Fine for body text |
| #584F9B text on black | 3.00:1 | AA large text | Lc -17.9 | 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
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D7D6EE
oklch(88.4% 0.033 287.6)
-
Step 300
300
#BDBCE5
oklch(81% 0.057 286.2)
-
Step 400
400
#9C98D8
oklch(70.7% 0.093 286.6)
-
Step 500
500
#847ECD
oklch(63.2% 0.117 286)
-
Step 600
600
#6F65BA
oklch(55.5% 0.129 286.8)
-
Step 700
700 (this color)
#584F9B
oklch(47.4% 0.119 286.3)
-
Step 800
800
#4C4582
oklch(42.7% 0.099 286.7)
-
Step 900
900
#3F3A68
oklch(37.6% 0.077 287)
-
Step 950
950
#25223D
oklch(26.9% 0.05 287.7)
#584F9B 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) | #305B9E | 0.056 |
| Deuteranopia (no green cones) | #2F5799 | 0.055 |
| Tritanopia (no blue cones) | #445F6D | 0.102 |
| Achromatopsia (no color) | #595959 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #584F9B
#584F9B
oklch(47.4% 0.119 286.3)
- #645F00
#645F00
oklch(47.5% 0.101 106.1)
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 #584F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.032
- Blueberry #464196 ΔE 0.049
- Dusk #4E5481 ΔE 0.050
- Dusky Blue #475F94 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.060
- Rebecca Purple #663399 ΔE 0.067
- Dusk Blue #26538D ΔE 0.069
Use #584F9B 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.