#5B5199
Closest named color: Twilight (#4E518B). oklch(47.9% 0.113 287.7), rgb(91, 81, 153).
Aa
White text reads best on this color (6.81:1).
About this color
#5B5199 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.113 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.031 away. White text reads best on it, at 6.81:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #5B5199 |
| RGB | rgb(91, 81, 153) |
| HSL | hsl(248, 31%, 46%) |
| OKLCH | oklch(47.9% 0.113 287.7) |
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 #5B5199 | 6.81:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #5B5199 | 3.08:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #5B5199 text on white | 6.81:1 | AA | Lc 83.4 | Fine for body text |
| #5B5199 text on black | 3.08:1 | AA large text | Lc -18.6 | 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
#D7D6ED
oklch(88.4% 0.031 287.7)
-
Step 300
300
#BEBCE3
oklch(81% 0.055 287.5)
-
Step 400
400
#9D98D5
oklch(70.7% 0.088 287.7)
-
Step 500
500
#867EC9
oklch(63.1% 0.111 287.7)
-
Step 600
600
#7066B6
oklch(55.6% 0.122 287.5)
-
Step 700
700 (this color)
#5B5199
oklch(47.9% 0.113 287.7)
-
Step 800
800
#4D457F
oklch(42.7% 0.094 288.1)
-
Step 900
900
#403B66
oklch(37.8% 0.072 287.7)
-
Step 950
950
#25233C
oklch(27.1% 0.046 286.6)
#5B5199 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) | #365D9C | 0.055 |
| Deuteranopia (no green cones) | #365997 | 0.052 |
| Tritanopia (no blue cones) | #4A5F6D | 0.095 |
| Achromatopsia (no color) | #5B5B5B | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B5199
#5B5199
oklch(47.9% 0.113 287.7)
- #646100
#646100
oklch(48% 0.103 107.6)
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 #5B5199, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.031
- Dusk #4E5481 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.052
- Blueberry #464196 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.066
- Dusty Grape #545775 ΔE 0.067
- Iris #6258C4 ΔE 0.070
Use #5B5199 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.