#5B558D
Closest named color: Twilight (#4E518B). oklch(48% 0.089 287.5), rgb(91, 85, 141).
Aa
White text reads best on this color (6.71:1).
About this color
#5B558D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.089 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.024 away. White text reads best on it, at 6.71:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.12:1 |
| White text | 6.71:1 |
Values
| HEX | #5B558D |
| RGB | rgb(91, 85, 141) |
| HSL | hsl(246, 25%, 44%) |
| OKLCH | oklch(48% 0.089 287.5) |
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 #5B558D | 6.71:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #5B558D | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #5B558D text on white | 6.71:1 | AA | Lc 83.0 | Fine for body text |
| #5B558D text on black | 3.12:1 | AA large text | Lc -18.9 | 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
#D8D7E9
oklch(88.5% 0.025 288.4)
-
Step 300
300
#BEBDDC
oklch(80.9% 0.043 286.9)
-
Step 400
400
#9D9ACA
oklch(70.6% 0.07 287.3)
-
Step 500
500
#8681BC
oklch(63.1% 0.088 287.5)
-
Step 600
600
#706AA8
oklch(55.6% 0.095 287.3)
-
Step 700
700 (this color)
#5B558D
oklch(48% 0.089 287.5)
-
Step 800
800
#4D4875
oklch(42.7% 0.074 287.9)
-
Step 900
900
#403D5E
oklch(37.8% 0.056 287.6)
-
Step 950
950
#252437
oklch(27% 0.035 286.2)
#5B558D 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) | #445D8F | 0.037 |
| Deuteranopia (no green cones) | #435A8C | 0.036 |
| Tritanopia (no blue cones) | #4E5F6A | 0.075 |
| Achromatopsia (no color) | #5C5C5C | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B558D
#5B558D
oklch(48% 0.089 287.5)
- #63611C
#63611C
oklch(48% 0.089 107.7)
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 #5B558D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.024
- Dusk #4E5481 ΔE 0.029
- Dusky Blue #475F94 ΔE 0.037
- Dusty Grape #545775 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.044
- Denim #3B638C ΔE 0.055
- YInMn Blue #415A77 ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.060
Use #5B558D 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.