#5B4F99
Closest named color: Twilight (#4E518B). oklch(47.5% 0.116 288.6), rgb(91, 79, 153).
Aa
White text reads best on this color (6.94:1).
About this color
#5B4F99 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.116 and its hue 289°. 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 6.94:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.02:1 |
| White text | 6.94:1 |
Values
| HEX | #5B4F99 |
| RGB | rgb(91, 79, 153) |
| HSL | hsl(250, 32%, 45%) |
| OKLCH | oklch(47.5% 0.116 288.6) |
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 #5B4F99 | 6.94:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #5B4F99 | 3.02:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #5B4F99 text on white | 6.94:1 | AA | Lc 83.9 | Fine for body text |
| #5B4F99 text on black | 3.02:1 | AA large text | Lc -18.1 | 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
#E9E8F4
oklch(93.5% 0.016 289.9)
-
Step 200
200
#D8D6ED
oklch(88.5% 0.031 289.7)
-
Step 300
300
#BEBBE4
oklch(80.8% 0.057 288.4)
-
Step 400
400
#9E98D6
oklch(70.8% 0.09 288.3)
-
Step 500
500
#877DCB
oklch(63.1% 0.116 288.5)
-
Step 600
600
#7265B7
oklch(55.6% 0.124 289)
-
Step 700
700 (this color)
#5B4F99
oklch(47.5% 0.116 288.6)
-
Step 800
800
#4E4580
oklch(42.8% 0.096 288.7)
-
Step 900
900
#403A67
oklch(37.6% 0.076 288.3)
-
Step 950
950
#26223C
oklch(27% 0.048 289.9)
#5B4F99 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) | #335B9C | 0.058 |
| Deuteranopia (no green cones) | #335897 | 0.057 |
| Tritanopia (no blue cones) | #4A5E6C | 0.098 |
| Achromatopsia (no color) | #5A5A5A | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4F99
#5B4F99
oklch(47.5% 0.116 288.6)
- #626000
#626000
oklch(47.5% 0.103 108.3)
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 #5B4F99, 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 0.049
- Dusky Blue #475F94 ΔE 0.052
- Blueberry #464196 ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.062
- Rebecca Purple #663399 ΔE 0.066
- Dusty Grape #545775 ΔE 0.069
Use #5B4F99 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.