#5B538F
Closest named color: Twilight (#4E518B). oklch(47.7% 0.095 288.4), rgb(91, 83, 143).
Aa
White text reads best on this color (6.82:1).
About this color
#5B538F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.095 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.023 away. White text reads best on it, at 6.82:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #5B538F |
| RGB | rgb(91, 83, 143) |
| HSL | hsl(248, 27%, 44%) |
| OKLCH | oklch(47.7% 0.095 288.4) |
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 #5B538F | 6.82:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #5B538F | 3.07:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #5B538F text on white | 6.82:1 | AA | Lc 83.5 | Fine for body text |
| #5B538F text on black | 3.07:1 | AA large text | Lc -18.5 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#BFBCDD
oklch(80.8% 0.046 289.5)
-
Step 400
400
#9E9ACC
oklch(70.8% 0.073 288.1)
-
Step 500
500
#8780BF
oklch(63.1% 0.094 288.5)
-
Step 600
600
#7169AB
oklch(55.6% 0.101 288.2)
-
Step 700
700 (this color)
#5B538F
oklch(47.7% 0.095 288.4)
-
Step 800
800
#4D4777
oklch(42.6% 0.078 288.3)
-
Step 900
900
#403C60
oklch(37.7% 0.061 288.2)
-
Step 950
950
#262338
oklch(27% 0.039 290.1)
#5B538F 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) | #405C91 | 0.042 |
| Deuteranopia (no green cones) | #3F598E | 0.041 |
| Tritanopia (no blue cones) | #4E5E6A | 0.079 |
| Achromatopsia (no color) | #5B5B5B | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B538F
#5B538F
oklch(47.7% 0.095 288.4)
- #626012
#626012
oklch(47.6% 0.095 108)
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 #5B538F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.023
- Dusk #4E5481 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.046
- Dusty Grape #545775 ΔE 0.049
- Denim #3B638C ΔE 0.060
- YInMn Blue #415A77 ΔE 0.062
- Light Navy Blue #2E5A88 ΔE 0.062
Use #5B538F 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.