#5B478B
Closest named color: Twilight (#4E518B). oklch(45.1% 0.109 295.2), rgb(91, 71, 139).
Aa
White text reads best on this color (7.72:1).
About this color
#5B478B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.109 and its hue 295°. 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 7.72:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #5B478B |
| RGB | rgb(91, 71, 139) |
| HSL | hsl(258, 32%, 41%) |
| OKLCH | oklch(45.1% 0.109 295.2) |
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 #5B478B | 7.72:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #5B478B | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #5B478B text on white | 7.72:1 | AAA | Lc 86.7 | Fine for body text |
| #5B478B text on black | 2.71:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DAD5EF
oklch(88.5% 0.036 294.5)
-
Step 300
300
#C3B9E6
oklch(80.9% 0.064 295.1)
-
Step 400
400
#A594DA
oklch(70.8% 0.102 294.8)
-
Step 500
500
#9078CF
oklch(63.2% 0.129 295.1)
-
Step 600
600
#7B5FBC
oklch(55.6% 0.141 295.3)
-
Step 700
700
#684EA2
oklch(49.2% 0.131 295.5)
-
Step 800
800 (this color)
#5B478B
oklch(45.1% 0.109 295.2)
-
Step 900
900
#453769
oklch(37.6% 0.084 294.9)
-
Step 950
950
#29213E
oklch(27.2% 0.053 295.3)
#5B478B 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) | #30538D | 0.065 |
| Deuteranopia (no green cones) | #345289 | 0.061 |
| Tritanopia (no blue cones) | #505462 | 0.088 |
| Achromatopsia (no color) | #535353 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B478B
#5B478B
oklch(45.1% 0.109 295.2)
- #545C00
#545C00
oklch(45.2% 0.103 115.5)
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 #5B478B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.044
- Blueberry #464196 ΔE 0.045
- Dusk #4E5481 ΔE 0.046
- Rebecca Purple #663399 ΔE 0.056
- Dusty Grape #545775 ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.068
Use #5B478B 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.