#5B5491
Closest named color: Twilight (#4E518B). oklch(48.1% 0.096 287.4), rgb(91, 84, 145).
Aa
White text reads best on this color (6.72:1).
About this color
#5B5491 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.096 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.025 away. White text reads best on it, at 6.72:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #5B5491 |
| RGB | rgb(91, 84, 145) |
| HSL | hsl(247, 27%, 45%) |
| OKLCH | oklch(48.1% 0.096 287.4) |
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 #5B5491 | 6.72:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #5B5491 | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #5B5491 text on white | 6.72:1 | AA | Lc 83.1 | Fine for body text |
| #5B5491 text on black | 3.12:1 | AA large text | Lc -18.8 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#BEBDDE
oklch(81% 0.046 286.7)
-
Step 400
400
#9D9ACD
oklch(70.7% 0.074 287)
-
Step 500
500
#8680C0
oklch(63.1% 0.095 287.6)
-
Step 600
600
#7069AD
oklch(55.7% 0.104 287.2)
-
Step 700
700 (this color)
#5B5491
oklch(48.1% 0.096 287.4)
-
Step 800
800
#4D4778
oklch(42.6% 0.08 288.1)
-
Step 900
900
#403C61
oklch(37.7% 0.063 288)
-
Step 950
950
#252339
oklch(26.9% 0.041 287.5)
#5B5491 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) | #405D93 | 0.042 |
| Deuteranopia (no green cones) | #3F5A90 | 0.041 |
| Tritanopia (no blue cones) | #4D606B | 0.083 |
| Achromatopsia (no color) | #5C5C5C | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5491
#5B5491
oklch(48.1% 0.096 287.4)
- #646110
#646110
oklch(48% 0.097 107.3)
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 #5B5491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.025
- Dusk #4E5481 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.045
- Dusty Grape #545775 ΔE 0.051
- Denim #3B638C ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.062
- YInMn Blue #415A77 ΔE 0.063
Use #5B5491 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.