#5B4789
Closest named color: Twilight (#4E518B). oklch(45% 0.106 295.8), rgb(91, 71, 137).
Aa
White text reads best on this color (7.75:1).
About this color
#5B4789 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.106 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.032 away. White text reads best on it, at 7.75:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #5B4789 |
| RGB | rgb(91, 71, 137) |
| HSL | hsl(258, 32%, 41%) |
| OKLCH | oklch(45% 0.106 295.8) |
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 #5B4789 | 7.75:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #5B4789 | 2.70:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #5B4789 text on white | 7.75:1 | AAA | Lc 86.8 | Fine for body text |
| #5B4789 text on black | 2.70:1 | Fails | Lc -15.3 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DBD5EE
oklch(88.5% 0.035 296.7)
-
Step 300
300
#C3B9E5
oklch(80.9% 0.062 295.4)
-
Step 400
400
#A694D8
oklch(70.8% 0.099 295.9)
-
Step 500
500
#9078CD
oklch(63.1% 0.127 295.5)
-
Step 600
600
#7B5FBA
oklch(55.5% 0.138 295.8)
-
Step 700
700
#684EA0
oklch(49% 0.128 296)
-
Step 800
800 (this color)
#5B4789
oklch(45% 0.106 295.8)
-
Step 900
900
#463768
oklch(37.7% 0.083 296.3)
-
Step 950
950
#29213D
oklch(27.1% 0.052 295.9)
#5B4789 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) | #31538B | 0.064 |
| Deuteranopia (no green cones) | #355287 | 0.061 |
| Tritanopia (no blue cones) | #515361 | 0.085 |
| Achromatopsia (no color) | #525252 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4789
#5B4789
oklch(45% 0.106 295.8)
- #535C00
#535C00
oklch(45.1% 0.103 116.2)
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 #5B4789, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.032
- Dusk #4E5481 ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.045
- Blueberry #464196 ΔE 0.047
- Rebecca Purple #663399 ΔE 0.058
- Dusty Grape #545775 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.068
Use #5B4789 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.